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  <url>
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  <url>
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  <url>
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  <url>
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  <url>
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  <url>
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  <url>
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      <image:title>Semivolatiles #2 Herbicides PotableWatR™</image:title>
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      <image:title>PotableWatR™ Coliforms</image:title>
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  <url>
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    <changefreq>daily</changefreq>
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      <image:title>Nitrite, PotableWatR™</image:title>
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  <url>
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    <changefreq>daily</changefreq>
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      <image:title>Residual Chlorine, PotableWatR™</image:title>
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  <url>
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  <url>
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  <url>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_13cc42a5-88c1-41cb-bd50-f24b2dbdbcd8.jpg?v=1764261259</image:loc>
      <image:title>Total Residual Chlorine QC plus QC Standard</image:title>
      <image:caption></image:caption>
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  </url>
  <url>
    <loc>https://esslabshop.com/products/oil-grease-concentrate</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_680ea76a-edb2-40e2-98ae-07a60279611b.jpg?v=1764261260</image:loc>
      <image:title>Oil &amp; Grease Concentrate</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/oil-grease-concentrate-wastewatr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_bac2c930-8ba4-473b-8967-f2c0caccec8d.jpg?v=1764261261</image:loc>
      <image:title>Oil &amp; Grease Concentrate, WasteWatR™</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/oil-grease-qc-plus-qc-standard</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_99ad45bf-8b27-4407-9da7-17eead611f5b.jpg?v=1764261262</image:loc>
      <image:title>Oil &amp; Grease QC plus QC Standard</image:title>
      <image:caption></image:caption>
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  </url>
  <url>
    <loc>https://esslabshop.com/products/uranium-pt</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_edbb476c-8555-4463-9fa9-ff441604ce85.jpg?v=1764261263</image:loc>
      <image:title>Uranium, PT</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/uranium-qc</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_99b6056c-a280-407f-8494-bab0435cefd1.jpg?v=1764261263</image:loc>
      <image:title>Uranium, QC</image:title>
      <image:caption></image:caption>
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  </url>
  <url>
    <loc>https://esslabshop.com/products/ohio-fluoride-qc</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_bf81251b-139d-438d-abe8-8cb697e9c64f.jpg?v=1764261265</image:loc>
      <image:title>Ohio Fluoride, QC</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/volatile-aromatics</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_2fd08244-1e71-4751-8e20-7eb145b7cc19.jpg?v=1764261266</image:loc>
      <image:title>Volatile Aromatics</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/volatile-aromatics-qc</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_f9aa9c62-6107-4e44-9def-d2a0760b0e6b.jpg?v=1764261266</image:loc>
      <image:title>Volatile Aromatics, QC</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/pah-gc-gcms</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_10d60590-c9e8-4166-8f7d-ef60bc6584c6.jpg?v=1764261267</image:loc>
      <image:title>PAH-GC &amp; GCMS</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/pah-gc-gcms-qc</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_8a73ea0d-3c98-4172-8d19-93ffcf6b4f93.jpg?v=1764261268</image:loc>
      <image:title>PAH-GC &amp; GCMS, QC</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/lithium-pt</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_b7619099-7e38-4e60-b038-9e1c3b41e97b.jpg?v=1764261269</image:loc>
      <image:title>Lithium, PT</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/lithium-qc</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_8535d584-b521-4bb0-b712-644c892ff3ee.jpg?v=1764261270</image:loc>
      <image:title>Lithium, QC</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/solids-concentrate-ws</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_9403d87f-47f9-461f-9021-56892c20e87b.jpg?v=1764261270</image:loc>
      <image:title>Solids, Concentrate, WS</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/solids-concentrate-potablewatr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_2f72b148-c7ea-44fb-97dc-517975c54609.jpg?v=1764261271</image:loc>
      <image:title>Solids, Concentrate, PotableWatR™</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/inorganic-disinfection-2</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_ce762e2c-3cb8-455f-9b40-ef6e95abd6bf.jpg?v=1764261272</image:loc>
      <image:title>Inorganic Disinfection 2</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/inorganic-disinfection-2-qc</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_52b83ae0-5dad-4e4d-b7de-e4659c127f8d.jpg?v=1764261273</image:loc>
      <image:title>Inorganic Disinfection 2 QC</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/inorganic-disinfection-1</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_f5f9ea66-6d17-40f9-96b7-d1ddf6c9a2a3.jpg?v=1764261274</image:loc>
      <image:title>Inorganic Disinfection 1</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/inorganic-disinfection-1-qc</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_1290b391-d427-4bf0-92f6-e6590393204b.jpg?v=1764261275</image:loc>
      <image:title>Inorganic Disinfection 1 QC</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/pcb-congeners-in-wastewater-wp-crm</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_58bdcee0-3be7-4327-afd4-8b5fc53ca859.jpg?v=1764261276</image:loc>
      <image:title>PCB Congeners in Wastewater, WP CRM</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/pcb-congeners-in-soil-soil-crm</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_966a1881-ed42-4687-a177-b76de018ed5e.jpg?v=1764261278</image:loc>
      <image:title>PCB Congeners in Soil, Soil CRM</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/ammonium-as-nh4-100-mg-l-125-ml</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_33d82cdd-4858-4653-a112-6f84659a8e65.jpg?v=1764261279</image:loc>
      <image:title>Ammonium as NH4- 100 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/ammonium-as-n-100-mg-l-125-ml</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_6b81896d-71d0-4123-bf85-4f82c8bdaeef.jpg?v=1764261279</image:loc>
      <image:title>Ammonium as N- 100 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/acetate-1000-mg-l-125-ml</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_3da09d5e-a731-47a9-98d2-83b772bacf40.jpg?v=1764261280</image:loc>
      <image:title>Acetate - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/iodide-1000-mg-l-125-ml</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_63816fa7-3ee6-473f-afde-ac0a707ff4c6.jpg?v=1764261282</image:loc>
      <image:title>Iodide - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/sulfide-wp-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_fcc249bb-1f90-4c7c-9ccd-14e0800deb0e.jpg?v=1764261281</image:loc>
      <image:title>Sulfide, WP QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/source-water-microbe-sm-9221</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_6918380d-4e5b-4e2d-bf16-a30ddb6ec1eb.jpg?v=1764261282</image:loc>
      <image:title>Source Water Microbe - SM 9221</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/source-water-microbe-sm-9221-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_517de4ce-f782-4d0c-9bb9-2b7bdaccfd16.jpg?v=1764261283</image:loc>
      <image:title>Source Water Microbe - SM 9221, WS QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/source-water-microbe-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_8eed5f83-70b6-4b31-a5a9-37daf926d81d.jpg?v=1764261284</image:loc>
      <image:title>Source Water Microbe, WS QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/potablewatr-coliform-microbe</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_20a93078-ecab-4fdf-8cf6-6a520c712dd5.jpg?v=1764261285</image:loc>
      <image:title>PotableWatR™ Coliform MicrobE™</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/wastewater-coliform-microbe-sm-9221</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_9d7148b0-a821-4012-91d9-eb3d9a2df61f.jpg?v=1764261287</image:loc>
      <image:title>Wastewater Coliform Microbe - SM 9221</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/heterotrophic-plate-count-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_b661df99-2c97-4f04-86e7-60fd0727d08b.jpg?v=1764261289</image:loc>
      <image:title>Heterotrophic Plate Count, WS QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/potable-water-coliform-microbe-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_aff99cc1-86f8-4a09-86bb-33d847a6cf24.jpg?v=1764261290</image:loc>
      <image:title>Potable Water Coliform Microbe, WS QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/color-wp-crm</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_5d78b80a-4ac4-408f-8ff4-40924958f83f.jpg?v=1764261292</image:loc>
      <image:title>Color, WP CRM</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/color-wp-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_8ac7ac20-dc48-49c5-b062-340b1295ca97.jpg?v=1764261292</image:loc>
      <image:title>Color, WP QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/volatiles-in-gas-cylinder-ae-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_0ae9ceae-0f5d-4771-870f-158e6606a9a9.jpg?v=1764270503</image:loc>
      <image:title>Volatiles in Gas Cylinder, AE QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/volatiles-on-sorbent-ae-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_e74fd208-845d-4b92-a43a-187394b0af84.jpg?v=1764261294</image:loc>
      <image:title>Volatiles on Sorbent, AE QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/semivolatiles-on-polyurethane-foam-ae-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_937e227a-d11e-486f-bb29-b28a7ee689cd.jpg?v=1764261295</image:loc>
      <image:title>Semivolatiles on Polyurethane Foam, AE QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/organochlorine-pesticides-on-puf-ae-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_c6eb11eb-ed54-44c2-855d-56be6300886a.jpg?v=1764261295</image:loc>
      <image:title>Organochlorine Pesticides on PUF, AE QR</image:title>
      <image:caption></image:caption>
    </image:image>
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      <image:title>Vegetation Radionuclides, MRAD QR</image:title>
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    <image:image>
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      <image:title>Water Gross Alpha/Beta, MRAD QR</image:title>
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  <url>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_a7156f6e-5ca1-4c52-b475-98986128f909.jpg?v=1764270457</image:loc>
      <image:title>Water Tritium, MRAD QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_3940146f-edcb-4342-89c2-ce8547e18262.jpg?v=1764261369</image:loc>
      <image:title>Water Radionuclides, MRAD QR</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/hexavalent-chromium-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_3967b2ed-996c-46b0-9e3e-275eeb69cbd7.jpg?v=1764270456</image:loc>
      <image:title>Hexavalent Chromium, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_e5a2ae3a-59ac-4291-b9e6-94b43d46e02a.jpg?v=1764261370</image:loc>
      <image:title>Vanadium, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/color-ws-crm</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_4929f290-9239-4d2f-b891-89331e917dcc.jpg?v=1764261372</image:loc>
      <image:title>Color, WS CRM</image:title>
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  <url>
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    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_d41ba4ab-c17a-4993-aa11-1a289dea68b9.jpg?v=1764261373</image:loc>
      <image:title>Color, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/uv-254-absorbance-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_3f78d707-7b32-4da3-ae9b-91e13b751633.jpg?v=1764261373</image:loc>
      <image:title>UV 254 Absorbance, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/dioxin-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_e2a977b3-de66-4120-b546-cbce557a3676.jpg?v=1764261374</image:loc>
      <image:title>Dioxin, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_310ac912-4c08-414a-bc4c-67323f386e50.jpg?v=1764261375</image:loc>
      <image:title>Organophosphorus Pesticides (OPP), WP QR</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/mercury-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_b8491519-f02f-4654-9f1f-f185ab00ded2.jpg?v=1764270452</image:loc>
      <image:title>Mercury, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/o-phosphate-nutrients-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_b375c12a-5688-40af-a8ee-4320e9913bdc.jpg?v=1764261376</image:loc>
      <image:title>o-Phosphate Nutrients, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/organic-carbon-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_f2873425-b349-460c-bc5a-e613336fe682.jpg?v=1764261377</image:loc>
      <image:title>Organic Carbon, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/total-organic-halides-tox-wp-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_caee5d40-0b06-4304-aea6-efcb4a528c35.jpg?v=1764261378</image:loc>
      <image:title>Total Organic Halides (TOX), WP QR</image:title>
      <image:caption></image:caption>
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  </url>
  <url>
    <loc>https://esslabshop.com/products/nitrogen-pesticides-wp-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_f426e61f-817a-4eb0-b333-58a6c3f5f011.jpg?v=1764261379</image:loc>
      <image:title>Nitrogen Pesticides, WP QR</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/chloral-hydrate-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_7e8126b9-0d02-4e7f-8f79-2d9986f2bdf7.jpg?v=1764261380</image:loc>
      <image:title>Chloral Hydrate, WS QR</image:title>
      <image:caption></image:caption>
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  </url>
  <url>
    <loc>https://esslabshop.com/products/low-level-nitroaromatics-nitramines-wp-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_bd0b23b1-a972-4d03-8126-ee98814121c6.jpg?v=1764261381</image:loc>
      <image:title>Low-Level Nitroaromatics &amp; Nitramines, WP QR</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/organophosphorus-pesticides-opp-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_85813982-082f-4db2-a585-48ebee2fcc99.jpg?v=1764261382</image:loc>
      <image:title>Organophosphorus Pesticides (OPP), WS QR</image:title>
      <image:caption></image:caption>
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  </url>
  <url>
    <loc>https://esslabshop.com/products/low-level-1-2-3-tcp-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_c1e27ea6-a075-4a54-ab0a-ef9e83f10eda.jpg?v=1764261382</image:loc>
      <image:title>Low-Level 1,2,3-TCP, WS QR</image:title>
      <image:caption></image:caption>
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  </url>
  <url>
    <loc>https://esslabshop.com/products/unregulated-volatiles-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_4938426a-602f-480b-be6b-93c999a69180.jpg?v=1764261383</image:loc>
      <image:title>Unregulated Volatiles, WS QR</image:title>
      <image:caption></image:caption>
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  </url>
  <url>
    <loc>https://esslabshop.com/products/haloacetic-acids-haa-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_cafa98af-8cd3-4eaf-ad8e-88569e4b2b25.jpg?v=1764261384</image:loc>
      <image:title>Haloacetic Acids (HAA), WS QR</image:title>
      <image:caption></image:caption>
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  </url>
  <url>
    <loc>https://esslabshop.com/products/1-4-dioxane-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_219ee9bc-123d-471c-934a-8a5cf34334a9.jpg?v=1764261385</image:loc>
      <image:title>1,4-Dioxane, WS QR</image:title>
      <image:caption></image:caption>
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  </url>
  <url>
    <loc>https://esslabshop.com/products/semivolatiles-1-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_9c413288-b90a-448c-93e4-8fcb68b9cfc9.jpg?v=1764261386</image:loc>
      <image:title>Semivolatiles #1, WS QR</image:title>
      <image:caption></image:caption>
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  </url>
  <url>
    <loc>https://esslabshop.com/products/semivolatiles-2-herbicides-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_a4c7caeb-c150-4a73-8502-84c0bcb8c2fd.jpg?v=1764261387</image:loc>
      <image:title>Semivolatiles #2 Herbicides, WS QR</image:title>
      <image:caption></image:caption>
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  </url>
  <url>
    <loc>https://esslabshop.com/products/edb-dbcp-tcp-wp-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_e59964c7-15a8-4e20-9ab5-35189c970eae.jpg?v=1764261387</image:loc>
      <image:title>EDB/DBCP/TCP, WP QR</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/hardness-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_b552a793-76f1-4971-9ac6-ba577899fd7e.jpg?v=1764261389</image:loc>
      <image:title>Hardness, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/nitrite-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_fb556f55-f2c9-4051-b09f-60e3afbd4387.jpg?v=1764261389</image:loc>
      <image:title>Nitrite, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/residual-chlorine-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_ef1ded21-9ed6-4342-94de-bdb60e525287.jpg?v=1764261390</image:loc>
      <image:title>Residual Chlorine, WS QR</image:title>
      <image:caption></image:caption>
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  </url>
  <url>
    <loc>https://esslabshop.com/products/metals-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_1436d174-d5f9-43e9-8a9d-fa3ac9498933.jpg?v=1764270442</image:loc>
      <image:title>Metals, WS QR</image:title>
      <image:caption></image:caption>
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  </url>
  <url>
    <loc>https://esslabshop.com/products/inorganics-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_f48c611e-965a-4552-93bd-8170eba54acb.jpg?v=1764261393</image:loc>
      <image:title>Inorganics, WS QR</image:title>
      <image:caption></image:caption>
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  </url>
  <url>
    <loc>https://esslabshop.com/products/turbidity-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_69c8819d-7cc5-4ebf-b423-427c445a08d6.jpg?v=1764261393</image:loc>
      <image:title>Turbidity, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/toxaphene-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_42880cfe-f85b-46e0-94ca-25d6948d3b7f.jpg?v=1764261394</image:loc>
      <image:title>Toxaphene, WS QR</image:title>
      <image:caption></image:caption>
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  </url>
  <url>
    <loc>https://esslabshop.com/products/halomethanes-thms-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_e491b3aa-f82e-46ee-a49b-5750abc99cbe.jpg?v=1764261394</image:loc>
      <image:title>Halomethanes (THMs), WS QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/regulated-volatiles-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_6850a36d-aeef-43b0-bd90-7b79b5342191.jpg?v=1764261395</image:loc>
      <image:title>Regulated Volatiles, WS QR</image:title>
      <image:caption></image:caption>
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  </url>
  <url>
    <loc>https://esslabshop.com/products/chlorinated-acid-herbicides-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_dbdd52c9-20a4-433c-b001-0839bd85cc79.jpg?v=1764261396</image:loc>
      <image:title>Chlorinated Acid Herbicides, WS QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/chlordane-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_969f4013-d524-47c3-94e1-e096a884d8dd.jpg?v=1764261397</image:loc>
      <image:title>Chlordane, WS QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/edb-dbcp-tcp-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_4279afc9-7323-4964-b71d-dfeb80f73481.jpg?v=1764261398</image:loc>
      <image:title>EDB/DBCP/TCP, WS QR</image:title>
      <image:caption></image:caption>
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  </url>
  <url>
    <loc>https://esslabshop.com/products/carbamate-carbamoxyloxime-pesticides-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Carbamate/Carbamoxyloxime Pesticides, WS QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/pcbs-as-decachlorobiphenyl-ws-qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_853f8fc4-9f1a-46b2-8cd9-2526f2ec9a71.jpg?v=1764261400</image:loc>
      <image:title>PCBs as Decachlorobiphenyl, WS QR</image:title>
      <image:caption></image:caption>
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  </url>
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      <image:title>Diesel Range Organics (DRO), WP QR</image:title>
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      <image:title>Texas High-Level Fuels (TPH) in Soil, Soil QR</image:title>
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      <image:title>Organophosphorus Pesticide (OPP) in Soil, Soil QR</image:title>
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      <image:title>Carbamate Pesticides in Soil, Soil QR</image:title>
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  <url>
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      <image:caption></image:caption>
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      <image:caption></image:caption>
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      <image:caption></image:caption>
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      <image:caption></image:caption>
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  <url>
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      <image:caption></image:caption>
    </image:image>
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  <url>
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      <image:title>RVD-01 - Multi-Parameter Refractive Index &amp; Density Certified Reference Material, at 15 °C, 20 °C, 25 °C and 30 °C</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/rvd-02</loc>
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    <changefreq>daily</changefreq>
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      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/rvd-03</loc>
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    <changefreq>daily</changefreq>
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      <image:title>RVD-03 - Multi-Parameter Refractive Index &amp; Density Certified Reference Material, at 15 °C, 20 °C, 25 °C and 30 °C</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/rvd-04</loc>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/rvd.jpg?v=1767694746</image:loc>
      <image:title>RVD-04 - Multi-Parameter Refractive Index &amp; Density Certified Reference Material, at 15 °C, 20 °C, 25 °C and 30 °C</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/den-wat01</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/density_water_single_1_1.jpg?v=1767694746</image:loc>
      <image:title>DEN-WAT01 - Analytical Water Density Standard, Density Values at 15 °C, 20 °C &amp; 25 °C</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/den-wat03</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/density_water_triple_pack_1.jpg?v=1767694747</image:loc>
      <image:title>DEN-WAT03 - Analytical Water Density Standard, Density Values at 15 °C, 20 °C &amp; 25 °C</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/159902</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/syringe_159902_03aa01c2-70b9-4391-811e-056817480b0c.jpg?v=1768837582</image:loc>
      <image:title>1710 C 100uL SPCL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/160310</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/0160310_b42c19c7-bca1-4280-a50e-dd8544a30577.png?v=1768837906</image:loc>
      <image:title>Hitachi Autosampler Syringe 500uL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/720070</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/download_db6b126c-194b-4960-8ca1-7f4f2c2b7fb2.jpg?v=1768997072</image:loc>
      <image:title>Proline Mech. Pipette, 1-ch, 20-200 l</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/720080</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/download_644ecd0c-15bf-4226-a081-5d9a7077869d.jpg?v=1768997003</image:loc>
      <image:title>Proline Mech. Pipette, 1-ch, 2-20 l</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/720110</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_Proline--_11056.jpg?v=1768402457</image:loc>
      <image:title>Proline Mech. Pipette, 1-ch, 1000-5000</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/722001</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_Proline--_11057_RGB.jpg?v=1768402459</image:loc>
      <image:title>Proline Mech. Pipette, 1-ch, 5 l</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/722004</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_Proline--_11057_RGB_ae1c94ef-2baa-4400-b6aa-c80d90e32e4d.jpg?v=1768402460</image:loc>
      <image:title>Proline Mech. Pipette, 1-ch, 10 l</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/722010</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_Proline--_11057_RGB_6fcefc2a-36fe-41bf-ae06-613eacc018af.jpg?v=1768402461</image:loc>
      <image:title>Proline Mech. Pipette, 1-ch, 20 l</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/722015</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_Proline--_11057_RGB_b2f2741b-1819-473c-8267-fb449a516c52.jpg?v=1768402462</image:loc>
      <image:title>Proline Mech. Pipette, 1-ch, 25 l</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/722020</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_Proline--_11057_RGB_7d7ffce0-167f-4fb5-99ee-16992592ecbb.jpg?v=1768402463</image:loc>
      <image:title>Proline Mech. Pipette, 1-ch, 50 l</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/722025</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_Proline--_11057_RGB_81e814c8-5832-4a9d-9609-7b59897c422d.jpg?v=1768402465</image:loc>
      <image:title>Proline Mech. Pipette, 1-ch, 100 l</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/722030</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_Proline--_11057_RGB_20f0d7b5-c41f-4482-8eb1-aed2203fa922.jpg?v=1768402466</image:loc>
      <image:title>Proline Mech. Pipette, 1-ch, 200 µl</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/722035</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_Proline--_11057_RGB_ed40d15a-d2cc-4e2a-bc0a-1b7926f6c4a7.jpg?v=1768402467</image:loc>
      <image:title>Proline Mech. Pipette, 1-ch, 250µl</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/722040</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_Proline--_11057_RGB_fd93d0f0-3edb-4667-a754-654e2a1faca2.jpg?v=1768402468</image:loc>
      <image:title>Proline Mech. Pipette, 1-ch, 500µl</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/722045</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_Proline--_11057_RGB_4ba739f5-de36-4b64-9f22-3268259e21b1.jpg?v=1768402470</image:loc>
      <image:title>Proline Mech. Pipette, 1-ch, 1000µl</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/722050</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_Proline--_11057_RGB_2aee9cd9-cdc7-4775-9ab6-563a43a444e3.jpg?v=1768402471</image:loc>
      <image:title>Proline Mech. Pipette, 1-ch, 2000µl</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/722055</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_Proline--_11058_RGB.jpg?v=1768402474</image:loc>
      <image:title>Proline Mech. Pipette, 1-ch, 5000µl</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/720210</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_Proline--_11054.jpg?v=1768402473</image:loc>
      <image:title>Proline Mech. Pipette, 8-ch, 0.5-10µl</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/720220</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_Proline--_11054_c9756212-2308-4218-8874-1f0f95f6b4bb.jpg?v=1768402475</image:loc>
      <image:title>Proline Mech. Pipette, 8-ch, 5-50µl</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/720310</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_Proline--_11055_RGB.jpg?v=1768402476</image:loc>
      <image:title>Proline Mech. Pipette, 12-ch, 0.5-10µl</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/720320</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_Proline--_11055_RGB_43eecdd4-5642-4551-83b6-e4500783a207.jpg?v=1768402478</image:loc>
      <image:title>Proline Mech. Pipette, 12-ch, 5-50 µl</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/720340</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_Proline--_11055_RGB_5f17bd3b-8786-4231-9e8f-8989808a2240.jpg?v=1768402478</image:loc>
      <image:title>Proline Mech. Pipette, 12-ch, 50-300µl</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/728010</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_ProlinePl_11060_RGB.jpg?v=1768402480</image:loc>
      <image:title>Proline Plus Mech. Pipette,1-ch,0.1-3 µl</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/728020</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_ProlinePl_11062_RGB.jpg?v=1768402481</image:loc>
      <image:title>Proline + Mech. Pipette,1-ch,0.5-10 µl</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/728030</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_ProlinePl_11066.jpg?v=1768402482</image:loc>
      <image:title>Proline Plus Mech. Pipette,1-ch,2-20 µl</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/728050</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_ProlinePl_11070.jpg?v=1768402484</image:loc>
      <image:title>Proline + Mech. Pipette,1-ch,10-100 µl</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/728060</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_ProlinePl_11071_RGB.jpg?v=1768402485</image:loc>
      <image:title>Proline + Mech. Pipette,1-ch,20-200 µl</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/728070</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_ProlinePl_11074.jpg?v=1768402486</image:loc>
      <image:title>Proline + Mech. Pipette,1-ch,100-1000 ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/728040</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_ProlinePl_11067_RGB.jpg?v=1768402489</image:loc>
      <image:title>Proline + Mech. Pipette, 1-ch, 5-50ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/728080</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_ProlinePl_11075.jpg?v=1768402488</image:loc>
      <image:title>Proline + Mech. Pipette, 1-ch, 500-5000ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/728090</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_ProlinePl_11061_RGB.jpg?v=1768402489</image:loc>
      <image:title>Proline + Mech. Pipette, 1-ch, 1-10 ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/728515</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_ProlinePl_11076_RGB.jpg?v=1768402492</image:loc>
      <image:title>Proline Plus Mech. Pipette,1-ch, 5ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/728520</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_ProlinePl_11076_RGB_34cebf91-f3af-4a35-8309-dcb362e31845.jpg?v=1768402493</image:loc>
      <image:title>Proline Plus Mech. Pipette, 1-ch, 10ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/728530</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_ProlinePl_11078.jpg?v=1768402494</image:loc>
      <image:title>Proline Plus Mech. Pipette,1-ch, 20ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/728535</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_ProlinePl_11078_263cd390-169f-4498-b754-5c3d5035e6dd.jpg?v=1768402495</image:loc>
      <image:title>Proline Plus Mech. Pipette,1-ch, 25 ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/728545</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_ProlinePl_11078_9c96cb4a-f0d9-4f07-b198-fea80c6f8138.jpg?v=1768402495</image:loc>
      <image:title>Proline Plus Mech. Pipette,1-ch, 50 ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/728550</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_ProlinePl_11078_599c4bbe-1c9c-42b5-8aaa-34d55f99ce3b.jpg?v=1768402497</image:loc>
      <image:title>Proline Plus Mech. Pipette,1-ch, 100 ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/728560</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_ProlinePl_11078_e1c71d19-8350-4811-a6f0-6474f58342a0.jpg?v=1768402498</image:loc>
      <image:title>Proline Plus Mech. Pipette,1-ch, 200 ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/728565</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_ProlinePl_11079.jpg?v=1768402499</image:loc>
      <image:title>Proline Plus Mech.Pipette,1-ch, 250ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/728567</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_ProlinePl_11078_487ff12f-2ab1-4c79-93b1-513acf0ea014.jpg?v=1768402500</image:loc>
      <image:title>Proline Plus Mech. Pipette,1-ch, 500ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/728570</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_ProlinePl_11079_56baaf5a-5c34-4999-a64f-ae4f4c758e74.jpg?v=1768402502</image:loc>
      <image:title>Proline Plus Mech. Pipette,1-ch, 1000ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/728575</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_ProlinePl_11079_e9905d89-f3bd-49d8-a329-4d8d936a5d0a.jpg?v=1768402504</image:loc>
      <image:title>Proline Plus Mech. Pipette,1-ch, 2000 ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/728580</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_ProlinePl_11079_722ae60f-6134-4a21-ae34-7e62f7a61e85.jpg?v=1768402505</image:loc>
      <image:title>Proline Plus Mech. Pipette,1-ch, 5000ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/728590</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_ProlinePl_11079_7b14d32d-71d8-4c38-a4b0-9e2b427c34e3.jpg?v=1768402506</image:loc>
      <image:title>Proline Plus Mech. Pipette, 1-ch,10 ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/728130</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_ProlinePl_11068_RGB.jpg?v=1768402507</image:loc>
      <image:title>Proline + Mech. Pipette, 8-ch, 10-100ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/728120</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_ProlinePl_11064_RGB.jpg?v=1768402509</image:loc>
      <image:title>Proline + Mech. Pipette,8-ch, 0.5-10ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/728140</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_ProlinePl_11072_RGB.jpg?v=1768402511</image:loc>
      <image:title>Proline + Mech. Pipette, 8-ch, 30-300 ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/728220</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_ProlinePl_11073_RGB.jpg?v=1768402512</image:loc>
      <image:title>Proline + Mech. Pipette,12-ch, 0.5-10 ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/728230</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_ProlinePl_11069_RGB.jpg?v=1768402513</image:loc>
      <image:title>Proline Plus Mech.Pipette, 12-ch , 10-100ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/728240</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_ProlinePl_11073_RGB_06c39c5a-094c-402b-a823-2cc4d1a56590.jpg?v=1768402514</image:loc>
      <image:title>Proline + Mech.Pipette, 12-ch, 30-300ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/lh-729010</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_Tacta----_11534.jpg?v=1768402515</image:loc>
      <image:title>Tacta Mech. Pipette, 1-ch, 0.1-3ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/lh-729020</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_Tacta----_11537.jpg?v=1768402517</image:loc>
      <image:title>Tacta Mech. Pipette, 1-ch, 0.5-10ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/lh-729030</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_Tacta----_11540.jpg?v=1768402518</image:loc>
      <image:title>Tacta Mech. Pipette, 1-ch, 2-20 ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/lh-729050</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Tacta-Mechanical-Pipette-11541-QuickShip-Sartorius.jpg?v=1768402520</image:loc>
      <image:title>Tacta Mech. Pipette, 1-ch, 10-100ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/lh-729060</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Tacta-Mechanical-Pipette-11544-QuickShip-Sartorius.jpg?v=1768402522</image:loc>
      <image:title>Tacta Mech. Pipette, 1-ch, 20-200ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/lh-729070</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH-Tacta-11547-Quickship-Sartorius.jpg?v=1768402521</image:loc>
      <image:title>Tacta Mech. Pipette, 1-ch, 100-1000UL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/lh-729090</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_Tacta----_11536.jpg?v=1768402524</image:loc>
      <image:title>Tacta Mech. Pipette, 1-ch, 1-10 ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/lh-729120</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/LH_Tacta----_11538.jpg?v=1768402526</image:loc>
      <image:title>Tacta Mech. Pipette, 8-ch, 0.5-10ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/lh-729130</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Tacta-Mechanical-Pipette-11542-QuickShip-Sartorius.jpg?v=1768402529</image:loc>
      <image:title>Tacta Mech. Pipette, 8-ch, 5-100ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/lh-729140</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Tacta-Mechanical-Pipette-11545-QuickShip-Sartorius.jpg?v=1768402531</image:loc>
      <image:title>Tacta Mech. Pipette, 8-ch, 30-300 ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/lh-729220</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Tacta-Mechanical-Pipette-11539-QuickShip-Sartorius.jpg?v=1768402532</image:loc>
      <image:title>Tacta Mech. Pipette, 12-ch, 0.5-10 ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/lh-729230</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Tacta-Mechanical-Pipette-11543-QuickShip-Sartorius.jpg?v=1768402533</image:loc>
      <image:title>Tacta Mech. Pipette, 12-ch, 5-100 ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/lh-729240</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Tacta-Mechanical-Pipette-11546-QuickShip-Sartorius.jpg?v=1768402536</image:loc>
      <image:title>Tacta Mech. Pipette, 12-ch, 30-300 ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/lh-747421</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Electronic-Pipette-Multi-Channel-12-10-_C2_B5-02-Sartorius.jpg?v=1768402539</image:loc>
      <image:title>Picus 2, 12-ch, 0.2 - 10 ul</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
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    <loc>https://esslabshop.com/products/lh-747441</loc>
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      <image:title>Picus 2, 12-ch, 5 - 120 ul</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/lh-747461</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Picus 2, 12-ch, 10 - 300 ul</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/lh-747491</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Electronic-Pipette-Multi-Channel-12-1200-_C2_B5-Sartorius.jpg?v=1768402542</image:loc>
      <image:title>Picus 2, 12-ch, 50 - 1,200 ul</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/lh-747021</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Electronic-Pipette-Single-Channel-10-_C2_B5-02-Sartorius.jpg?v=1768402544</image:loc>
      <image:title>Picus 2, 1-ch, 0.2 - 10 ul</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/lh-747041</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Electronic-Pipette-Single-Channel-120-_C2_B5-Sartorius.jpg?v=1768402544</image:loc>
      <image:title>Picus 2, 1-ch, 5 - 120 ul</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/lh-747061</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Electronic-Pipette-Single-Channel-300-_C2_B5-Sartorius.jpg?v=1768402545</image:loc>
      <image:title>Picus 2, 1-ch, 10 - 300 ul</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/lh-747081</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Electronic-Pipette-Single-Channel-1000-_C2_B5-Sartorius.jpg?v=1768402547</image:loc>
      <image:title>Picus 2, 1-ch, 50 - 1,000 ul</image:title>
      <image:caption></image:caption>
    </image:image>
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  <url>
    <loc>https://esslabshop.com/products/lh-747101</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Electronic-Pipette-Single-Channel-5000-_C2_B5-02-Sartorius.jpg?v=1768402549</image:loc>
      <image:title>Picus 2, 1-ch, 100 - 5,000 ul</image:title>
      <image:caption></image:caption>
    </image:image>
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  <url>
    <loc>https://esslabshop.com/products/lh-747111</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Electronic-Pipette-Single-Channel-10000-_C2_B5-Sartorius.jpg?v=1768402549</image:loc>
      <image:title>Picus 2, 1-ch, 500 - 10,000ul</image:title>
      <image:caption></image:caption>
    </image:image>
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  <url>
    <loc>https://esslabshop.com/products/lh-747321</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Electronic-Pipette-Multi-Channel-8-10-_C2_B5-Sartorius.jpg?v=1768402550</image:loc>
      <image:title>Picus 2, 8-ch, 0.2 - 10ul</image:title>
      <image:caption></image:caption>
    </image:image>
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  <url>
    <loc>https://esslabshop.com/products/lh-747341</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Electronic-Pipette-Multi-Channel-8-120-_C2_B5-Sartorius.jpg?v=1768402552</image:loc>
      <image:title>Picus 2, 8-ch, 5 - 120ul</image:title>
      <image:caption></image:caption>
    </image:image>
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  <url>
    <loc>https://esslabshop.com/products/lh-747361</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Electronic-Pipette-Multi-Channel-8-300-_C2_B5-Sartorius.jpg?v=1768402552</image:loc>
      <image:title>Picus 2, 8-ch, 10 - 300ul</image:title>
      <image:caption></image:caption>
    </image:image>
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  <url>
    <loc>https://esslabshop.com/products/lh-747391</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Electronic-Pipette-Multi-Channel-8-1200-_C2_B5-Sartorius.jpg?v=1768402554</image:loc>
      <image:title>Picus 2, 8-ch, 50 - 1,200ul</image:title>
      <image:caption></image:caption>
    </image:image>
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  <url>
    <loc>https://esslabshop.com/products/8350-9-100-an</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/chiron-logo_7be84ef6-732e-47c5-83f4-50889b9ea1fc.webp?v=1768996923</image:loc>
      <image:title>1-[2,4-Dinitrophenylhydrazone]pyruvaldehyde</image:title>
      <image:caption>1-[2,4-Dinitrophenylhydrazone]pyruvaldehyde</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/011</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_ded22273-37cc-48d5-a90a-a2f235e1751c.jpg?v=1770035193</image:loc>
      <image:title>Aluminum - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/013</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_76c98d5e-1a45-4e48-aee9-52292f702914.jpg?v=1770035193</image:loc>
      <image:title>Arsenic - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/015</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_a498321e-0c9a-4e4a-a5a3-b3cadc7011ef.jpg?v=1770035194</image:loc>
      <image:title>Beryllium - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/018</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_a6604a5f-61c6-476b-9add-0ba6d41a740f.jpg?v=1770035194</image:loc>
      <image:title>Calcium - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/019</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_a358ebd6-1774-417a-8698-3cfdbcbbe9a0.jpg?v=1770035195</image:loc>
      <image:title>Hexavalent Chromium - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/020</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_d2b476c2-e67e-4401-ae5d-78c59a0b7b1b.jpg?v=1770035196</image:loc>
      <image:title>Total Chromium - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/021</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_a7e496bb-a78d-4bae-b786-09e9fba18fb4.jpg?v=1770035198</image:loc>
      <image:title>Cobalt - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/022</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_93493940-cf1c-43e1-9d9f-7c923b309602.jpg?v=1770035199</image:loc>
      <image:title>Copper - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/023</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_9ffd5466-33b7-4f46-8799-3dbcdb0d01e9.jpg?v=1770035200</image:loc>
      <image:title>Iron - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/024</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_9eda5cdd-ee35-4bda-9450-57fa95fb1b15.jpg?v=1770035200</image:loc>
      <image:title>Lead - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/025</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_afe64933-34d5-40be-b66f-d19a75e4811b.jpg?v=1770035202</image:loc>
      <image:title>Magnesium - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/026</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_3f694169-eb08-4fb2-9996-baaae0dbfe58.jpg?v=1770035203</image:loc>
      <image:title>Manganese - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/027</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_cc7dd767-4e01-48cc-aaf8-9fd47ffbb8aa.jpg?v=1770035204</image:loc>
      <image:title>Mercury - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/028</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_922c075f-5931-4eae-afc2-9fe99cee69f1.jpg?v=1770035205</image:loc>
      <image:title>Molybdenum - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/029</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_25749373-715d-4568-9b55-25c92c33023d.jpg?v=1770035206</image:loc>
      <image:title>Nickel - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/030</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_d84325d2-cc49-409a-a176-c9a37d4721b2.jpg?v=1770035207</image:loc>
      <image:title>Potassium - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/031</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_65fd0d86-969b-4f58-858e-4949ca37545d.jpg?v=1770035209</image:loc>
      <image:title>Selenium - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/032</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_f94465d7-e4d5-43dc-a5ec-e1b643aafb56.jpg?v=1770035210</image:loc>
      <image:title>Silicon - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/033</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_2c101547-919f-4cf6-ae89-41270c7fd159.jpg?v=1770035211</image:loc>
      <image:title>Silver - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/034</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_d74c1837-6563-42df-8cbe-d5cb378b3a63.jpg?v=1770035212</image:loc>
      <image:title>Sodium - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/035</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_eba8a3de-06dc-4306-b9db-c5d9e18b8f63.jpg?v=1770035213</image:loc>
      <image:title>Strontium - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/036</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_677914a1-71e2-46e2-b56c-ce9f66cb3b89.jpg?v=1770035214</image:loc>
      <image:title>Thallium - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/037</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_c26c151a-3d21-4b8e-9957-5e27aa53415c.jpg?v=1770035215</image:loc>
      <image:title>Tin - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/038</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_3374b546-394b-4f6a-912f-c180259ad6d3.jpg?v=1770035216</image:loc>
      <image:title>Titanium - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/039</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_d6690e90-b060-4c2c-ad00-2a849c74baf8.jpg?v=1770035218</image:loc>
      <image:title>Vanadium - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/040</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_255b2c8e-dac5-40d5-8335-09c76c528586.jpg?v=1770035220</image:loc>
      <image:title>Zinc - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/042</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_2cfce83a-e9e0-42ca-b456-cff2dff7f880.jpg?v=1770035223</image:loc>
      <image:title>Chemical Oxygen Demand (COD) - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/043</loc>
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      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_8ed8e489-1dd8-4a7a-9acf-3a0f1c4727ff.jpg?v=1770035223</image:loc>
      <image:title>Total Kjeldahl-Nitrogen (TKN) - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/044</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Ammonia as Ammonia (NH3) - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/045</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_b6f3e5af-af09-4cfb-9a1f-b1f8793dfac1.jpg?v=1770035227</image:loc>
      <image:title>Ammonia as Nitrogen (N) - 1000 mg/L, 125 mL</image:title>
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  <url>
    <loc>https://esslabshop.com/products/046</loc>
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    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_bf6ebe12-afcb-4f83-9760-0359fe70ad3b.jpg?v=1770035228</image:loc>
      <image:title>Bromide - 1000 mg/L, 125 mL</image:title>
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  <url>
    <loc>https://esslabshop.com/products/047</loc>
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    <changefreq>daily</changefreq>
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      <image:title>Chloride - 1000 mg/L, 125 mL</image:title>
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  <url>
    <loc>https://esslabshop.com/products/048</loc>
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    <changefreq>daily</changefreq>
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      <image:title>Free Cyanide - 1000 mg/L, 125 mL</image:title>
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  <url>
    <loc>https://esslabshop.com/products/049</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Complex Cyanide - 1000 mg/L, 125 mL</image:title>
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  <url>
    <loc>https://esslabshop.com/products/050</loc>
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    <changefreq>daily</changefreq>
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      <image:title>Fluoride - 1000 mg/L, 125 mL</image:title>
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  <url>
    <loc>https://esslabshop.com/products/051</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Nitrate as Nitrate (NO3) - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
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  <url>
    <loc>https://esslabshop.com/products/052</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_d4708ff9-41ee-408f-8c84-cc42f0275b54.jpg?v=1770035235</image:loc>
      <image:title>Nitrate as Nitrogen (N) - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/053</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_ab8e477a-74cc-46b4-be09-7fee621f38a4.jpg?v=1770035236</image:loc>
      <image:title>Nitrite as Nitrogen (N) - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/057</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_c80d742b-18c6-4b2b-9167-a1256b0b514b.jpg?v=1770035238</image:loc>
      <image:title>Metals &amp; Cyanide Blank Soil</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/058</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_094b4980-ac06-41b4-b9e1-4335918efc1f.jpg?v=1770035238</image:loc>
      <image:title>Metals &amp; Cyanide Blank Sand</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/060</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_72b15d85-fa44-4dd1-af1f-0fbd04557a2a.jpg?v=1770035239</image:loc>
      <image:title>Phosphate as Phosphate (PO4) - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/061</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_69090b52-bc48-4dbc-929d-14e42ab925bc.jpg?v=1770035240</image:loc>
      <image:title>Phosphate as Phosphorous (P) - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/062</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_9ddd4c32-e5ae-4622-9cad-f04070fa4913.jpg?v=1770035241</image:loc>
      <image:title>Sulfate - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/063</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_6b801806-2d31-403d-80e0-db155d24d581.jpg?v=1770035242</image:loc>
      <image:title>Phosphorus - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/064</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_7878454b-3701-483f-a7ca-9ecf03920f10.jpg?v=1770035244</image:loc>
      <image:title>Silica - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
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  <url>
    <loc>https://esslabshop.com/products/065</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_9480c741-ddd6-41d3-b61f-9594d60d0ebd.jpg?v=1770035245</image:loc>
      <image:title>Bromate - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
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  </url>
  <url>
    <loc>https://esslabshop.com/products/066</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_f8dfdea6-e2dc-443a-95b2-e815d1930f79.jpg?v=1770035246</image:loc>
      <image:title>Chlorate - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/067</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_5b5cb180-4ab0-4f62-9b4f-7572b728aeec.jpg?v=1770035247</image:loc>
      <image:title>Chlorite - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/068</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_95f11542-0650-434c-af7c-1b4b494431e8.jpg?v=1770035248</image:loc>
      <image:title>Perchlorate - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/071</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_ef556f4d-58d8-4f34-b6bd-e0567739245f.jpg?v=1770035249</image:loc>
      <image:title>Sulfide, WasteWatR™</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/077</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_58550b47-f5ba-4df4-b816-821d8ae01186.jpg?v=1770035251</image:loc>
      <image:title>MA Ground Water Enterococci</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/078</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_8839a355-658a-4e31-9069-0b9da3d599c9.jpg?v=1770035251</image:loc>
      <image:title>Source Water Microbe</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/079</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_d12e6900-ba2f-48f1-9902-48d0c1af1778.jpg?v=1770035252</image:loc>
      <image:title>Heterotrophic Plate Count - 079</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/081</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_f63cb402-1ffd-49b3-81c8-a8557ee2de8a.jpg?v=1770035254</image:loc>
      <image:title>Enterococci, QC</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/083</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_31d09e4d-d491-4998-8f9c-f4ca2547979d.jpg?v=1770035255</image:loc>
      <image:title>WasteWatR™ Coliforms</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/084</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_d07e59c8-ce87-49df-8280-e94d899f6a9b.jpg?v=1770035256</image:loc>
      <image:title>Heterotrophic Plate Count, QC</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/127</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_f458223c-05c2-453a-8178-e6dc6b6fbd42.jpg?v=1770035257</image:loc>
      <image:title>pH 4 Pt</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/128</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_60bf7943-fb1d-439e-8051-cb849bc7e88e.jpg?v=1770035258</image:loc>
      <image:title>pH 4 Pt - cs of 6</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/129</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_bab28c42-052e-497a-8e85-d6b177bce6e2.jpg?v=1770035259</image:loc>
      <image:title>pH 4 Liter</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/131</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_088ceb2c-9b9d-4465-a9c5-afe785835d45.jpg?v=1770035260</image:loc>
      <image:title>pH 7 Pt</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/132</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_44f36c8b-d677-464f-80d7-f3ff7ed071f7.jpg?v=1770035261</image:loc>
      <image:title>pH 7 Pt - cs of 6</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/133</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_e4a42563-bbb3-4916-a3aa-4684a3cacbfc.jpg?v=1770035262</image:loc>
      <image:title>pH 7 Liter</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/135</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_49594db2-ded8-475c-8f83-76c993bdc56b.jpg?v=1770035263</image:loc>
      <image:title>pH 10 Pt</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/136</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_4c0f7ba9-5e39-49a6-897d-4714f64b6ca9.jpg?v=1770035264</image:loc>
      <image:title>pH 10 Pt - cs of 6</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/137</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_b756339e-19ab-4c19-9f11-b94bc0490599.jpg?v=1770035265</image:loc>
      <image:title>pH 10 Liter</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/141</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_d147ccc8-3862-4a2d-8d05-e78d3c3a8b4a.jpg?v=1770035266</image:loc>
      <image:title>pH 4, 7, 10 Pt - cs of 6</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/160</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_57fa19a5-8321-4e71-9d41-35ef9efeab8d.jpg?v=1770035268</image:loc>
      <image:title>Metals in Sewage SludG™, PriorityPollutnT™</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/212</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_a5cb5bcb-1548-4679-a38b-9404014933ed.jpg?v=1770035268</image:loc>
      <image:title>Dissolved Oxygen</image:title>
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  <url>
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    </image:image>
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  <url>
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      <image:title>PCBs in Soil - 1248 Low</image:title>
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  <url>
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      <image:title>PCBs in Soil - 1248 High</image:title>
      <image:caption></image:caption>
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      <image:title>Solids, WasteWatR™</image:title>
      <image:caption></image:caption>
    </image:image>
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      <image:title>Trace Metals, WasteWatR™</image:title>
      <image:caption></image:caption>
    </image:image>
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  <url>
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      <image:title>Total Residual Chlorine, WasteWatR™</image:title>
      <image:caption></image:caption>
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  <url>
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    <changefreq>daily</changefreq>
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      <image:title>Cyanide &amp; Phenol, WasteWatR™</image:title>
      <image:caption></image:caption>
    </image:image>
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  <url>
    <loc>https://esslabshop.com/products/504</loc>
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    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Oil &amp; Grease, WasteWatR™</image:title>
      <image:caption></image:caption>
    </image:image>
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  <url>
    <loc>https://esslabshop.com/products/505</loc>
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    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Simple Nutrients, WasteWatR™</image:title>
      <image:caption></image:caption>
    </image:image>
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  <url>
    <loc>https://esslabshop.com/products/506</loc>
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    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Minerals, WasteWatR™</image:title>
      <image:caption></image:caption>
    </image:image>
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    <loc>https://esslabshop.com/products/507</loc>
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    <changefreq>daily</changefreq>
    <image:image>
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    <image:image>
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  <url>
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  <url>
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  <url>
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  <url>
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  <url>
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  <url>
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      <image:caption></image:caption>
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  <url>
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    <image:image>
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      <image:caption></image:caption>
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  <url>
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    <image:image>
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      <image:caption></image:caption>
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  <url>
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    <image:image>
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  <url>
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    <image:image>
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  <url>
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    <image:image>
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      <image:caption></image:caption>
    </image:image>
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  <url>
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    <changefreq>daily</changefreq>
    <image:image>
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  <url>
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    <image:image>
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  <url>
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    <image:image>
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      <image:caption></image:caption>
    </image:image>
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  <url>
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    <image:image>
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    </image:image>
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  <url>
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    <image:image>
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  <url>
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  <url>
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  <url>
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  <url>
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      <image:title>WasteWatR™ Coliform MicrobE™</image:title>
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    </image:image>
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      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_004894a1-e0e7-48cf-826e-434401c69e3b.jpg?v=1770035351</image:loc>
      <image:title>Demand</image:title>
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      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_4b4eb889-0ff8-4f20-a7d1-f2fe4ac11006.jpg?v=1770035353</image:loc>
      <image:title>Complex Nutrients</image:title>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_6004f0f4-2737-454d-a4e8-9499f515978f.jpg?v=1770035354</image:loc>
      <image:title>Hardness</image:title>
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  <url>
    <loc>https://esslabshop.com/products/581</loc>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_6ed2311f-bca2-47cf-b11a-f20ca752fff4.jpg?v=1770035354</image:loc>
      <image:title>Minerals</image:title>
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  <url>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_38345148-39ed-4eaf-985f-5c5d4953aa86.jpg?v=1770035356</image:loc>
      <image:title>Oil &amp; Grease</image:title>
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  <url>
    <loc>https://esslabshop.com/products/584</loc>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_70e6ef97-75af-41cd-b466-44c9d9e9ca11.jpg?v=1770035356</image:loc>
      <image:title>Simple Nutrients</image:title>
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    <image:image>
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      <image:title>Trace Metals</image:title>
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      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_1fd68837-706b-44eb-b6f9-ebe76090e9d6.jpg?v=1770035358</image:loc>
      <image:title>Total Residual Chlorine</image:title>
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      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_9c78be39-ef6f-4446-8ca3-829a755340ff.jpg?v=1770035359</image:loc>
      <image:title>Total Cyanide</image:title>
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      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_de57346f-a3ad-4438-a5a2-a516dae0cefb.jpg?v=1770035360</image:loc>
      <image:title>Total Phenolics (4-AAP)</image:title>
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    <image:image>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_cea4933b-2733-45b7-9444-986d7cf56a76.jpg?v=1770035362</image:loc>
      <image:title>Inorganics</image:title>
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  <url>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_49a980d0-b0e8-4eef-89aa-bbfceb73341a.jpg?v=1770035362</image:loc>
      <image:title>Turbidity</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/593</loc>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_f03731d5-ca2d-4b2b-91af-f334ca965938.jpg?v=1770035363</image:loc>
      <image:title>Residual Chlorine</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/594</loc>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_f5790dd3-79fe-47de-b913-aa512e08c415.jpg?v=1770035364</image:loc>
      <image:title>Nitrite</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/595</loc>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_95d61a65-47c7-475b-9f29-6e51096534b3.jpg?v=1770035366</image:loc>
      <image:title>SourceWatR™ Microbe</image:title>
      <image:caption></image:caption>
    </image:image>
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  <url>
    <loc>https://esslabshop.com/products/596</loc>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_f608e91e-9df1-4404-9b83-233718e67fac.jpg?v=1770035366</image:loc>
      <image:title>Low-Level 1,2,3-TCP</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/597</loc>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_3631233f-c709-4f85-814c-2fd9426ee008.jpg?v=1770035367</image:loc>
      <image:title>1,4-Dioxane</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/599</loc>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_63ef6403-3b90-46c2-865c-c23b366860e5.jpg?v=1770035368</image:loc>
      <image:title>PFAS in Wastewater, WP PT</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/600</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_d0b37388-f541-417d-a43d-7ffadb01e889.jpg?v=1770035370</image:loc>
      <image:title>Total Petroleum Hydrocarbons (TPH) in Water #1</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/601</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_100179cd-8b5e-4c24-9693-69c16f789c2d.jpg?v=1770035371</image:loc>
      <image:title>Total Petroleum Hydrocarbons (TPH) in Water #2</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/603</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_9b485c4e-c010-445f-8574-668a32a35299.jpg?v=1770035372</image:loc>
      <image:title>PFAS in Soil, Soil CRM</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/606</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_56602548-ba88-4d61-ace7-3e5d63f0c273.png?v=1770035372</image:loc>
      <image:title>Air Filter Radionuclides, MRaD™</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/607</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_a07f8d65-6934-4e1f-8159-3b1b9f6531a7.png?v=1770035374</image:loc>
      <image:title>Air Filter Gross Alpha/Beta, MRaD™</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/608</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_cf68ddf3-c81e-435a-be14-f6805d88654b.jpg?v=1770035376</image:loc>
      <image:title>Soil Radionuclides, MRaD™</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/609</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_e1ce78d3-e9b3-48c3-82fe-2e5f94e1ea7a.jpg?v=1770035377</image:loc>
      <image:title>Vegetation Radionuclides, MRaD™</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/615</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_7677a3f5-920d-4f23-942e-a303c4e78793.jpg?v=1770035378</image:loc>
      <image:title>Water Gross Alpha/Beta, MRaD™</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/616</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_5722c871-bd55-4d82-9b08-4ceebd5b05d8.png?v=1770035378</image:loc>
      <image:title>Water Tritium, MRaD™</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/617</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_c361d1c8-3625-4c37-9a18-814981a621f1.jpg?v=1770035379</image:loc>
      <image:title>Water Radionuclides, MRaD™</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/619</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_2b05c6c3-b20e-4a24-aa07-cc447df36cc8.jpg?v=1770035382</image:loc>
      <image:title>Metals in Sewage SludG™</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/620</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_ab54c94c-4a7f-4c17-b076-e02a54e89149.jpg?v=1770035383</image:loc>
      <image:title>Metals in Soil</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/621</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_3d56c07d-101a-492a-bc31-02770439c81c.jpg?v=1770035386</image:loc>
      <image:title>Cyanide in Soil</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/623</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_dab2c0e4-d63f-4714-b251-7030d73a6620.jpg?v=1770035384</image:loc>
      <image:title>Volatiles in Soil</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/624</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_8e87961d-0506-4615-bced-ef003b467ff3.jpg?v=1770035386</image:loc>
      <image:title>PCBs in Soil</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/625</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_570a56d5-5b31-41e2-a715-9165f57bb25f.jpg?v=1770035387</image:loc>
      <image:title>Low-Level PAHs in Soil</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/626</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_8f784322-09ba-4481-8fe8-87ce5fdfcf80.jpg?v=1770035389</image:loc>
      <image:title>Chlorinated Acid Herbicides in Soil</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/627</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_b354b8d1-bf74-46d8-add6-9cdd5eebcd7d.jpg?v=1770035391</image:loc>
      <image:title>Toxaphene in Soil</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/628</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_c47cd3ff-2f2b-40cf-8189-544dcf6add42.jpg?v=1770035392</image:loc>
      <image:title>Chlordane in Soil</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/629</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_225e8aaf-e183-4a10-8aa8-2cd8c6b3dce8.jpg?v=1770035394</image:loc>
      <image:title>TCLP Metals in Soil</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/630</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_75dda8cc-a703-4b44-841c-59535610c167.jpg?v=1770035395</image:loc>
      <image:title>Gasoline Range Organics (GRO) in Soil</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/631</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_fd9b0f30-f30e-4f94-a1d5-0ce31a15d746.jpg?v=1770035397</image:loc>
      <image:title>Diesel Range Organics (DRO) in Soil</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/632</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_2264235d-7406-492c-ae35-b6268ae5aa55.jpg?v=1770035399</image:loc>
      <image:title>Total Petroleum Hydrocarbons (TPH) in Soil</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/633</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
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      <image:title>Total Organic Halides (TOX), WasteWatR™</image:title>
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  <url>
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      <image:title>Nitrogen Pesticides, PriorityPollutnT™</image:title>
      <image:caption></image:caption>
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  <url>
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      <image:title>Chloral Hydrate, PotableWatR™</image:title>
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  <url>
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      <image:title>Low-Level 1,2,3-TCP</image:title>
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      <image:title>Unregulated Volatiles, PotableWatR™</image:title>
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  <url>
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      <image:title>Haloacetic Acids (HAA), PotableWatR™</image:title>
      <image:caption></image:caption>
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  <url>
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      <image:title>1,4-Dioxane</image:title>
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      <image:title>Semivolatiles #1, PotableWatR™</image:title>
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      <image:title>Semivolatiles #2 Herbicides PotableWatR™</image:title>
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  <url>
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      <image:title>EDB/DBCP/TCP, WasteWatR™</image:title>
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  <url>
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      <image:title>Hardness, PotableWatR™</image:title>
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  <url>
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      <image:title>PotableWatR™ Coliforms</image:title>
      <image:caption></image:caption>
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  <url>
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    <changefreq>daily</changefreq>
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      <image:title>Nitrite, PotableWatR™</image:title>
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  <url>
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      <image:title>Residual Chlorine, PotableWatR™</image:title>
      <image:caption></image:caption>
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  <url>
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      <image:title>Metals, PotableWatR™</image:title>
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  <url>
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      <image:title>Turbidity, PotableWatR™</image:title>
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      <image:title>UV 254 Absorbance</image:title>
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      <image:title>Carbamate Pesticides, PriorityPollutnT™</image:title>
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      <image:title>Settleable Solids, WasteWatR™</image:title>
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      <image:title>Corrosivity/pH in Soil, PriorityPollutnT™</image:title>
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      <image:title>Acidity, WasteWatR™</image:title>
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      <image:title>Low-Level Total Residual Chlorine</image:title>
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    <changefreq>daily</changefreq>
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      <image:title>Boron, WasteWatR™</image:title>
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  <url>
    <loc>https://esslabshop.com/products/921</loc>
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    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Hexavalent Chromium in Soil, PriorityPollutnT™</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/924</loc>
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    <changefreq>daily</changefreq>
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      <image:title>Ready-to-Use VOAs in Soil, PriorityPollutnT™</image:title>
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  <url>
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      <image:title>Organophosphorus Pesticide (OPP) Soil, PrPollutnT™</image:title>
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  <url>
    <loc>https://esslabshop.com/products/926</loc>
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    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Carbamate Pesticides in Soil, PriorityPollutnT™</image:title>
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  <url>
    <loc>https://esslabshop.com/products/928</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Glycols in Soil</image:title>
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    <changefreq>daily</changefreq>
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      <image:title>Uranium, PotableWatR™</image:title>
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  <url>
    <loc>https://esslabshop.com/products/931</loc>
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    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Low-Level Mercury, WasteWatR™</image:title>
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  <url>
    <loc>https://esslabshop.com/products/932</loc>
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    <changefreq>daily</changefreq>
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      <image:title>Low-Level Nitroaromatics &amp; Nitramines</image:title>
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    </image:image>
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    <loc>https://esslabshop.com/products/934</loc>
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    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Organophosphorus Pesticides (OPP)</image:title>
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  <url>
    <loc>https://esslabshop.com/products/935</loc>
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  <url>
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  <url>
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      <image:title>Volatiles in Gas Cylinder</image:title>
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  <url>
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  <url>
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      <image:title>Hexavalent Chromium in Impinger Solution</image:title>
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  <url>
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      <image:title>Total Residual Chlorine QC plus QC Standard</image:title>
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      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_a1d2682c-5a94-4dfc-bf3b-1c6043ba46fd.jpg?v=1770035744</image:loc>
      <image:title>Uranium, PT</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/4402</loc>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_2e7399d1-35e9-4f4c-9d93-a8bf96169f56.jpg?v=1770035746</image:loc>
      <image:title>Uranium, QC</image:title>
      <image:caption></image:caption>
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  </url>
  <url>
    <loc>https://esslabshop.com/products/4429</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_bcf86327-04b5-4994-af34-d5ba79d75678.jpg?v=1770035747</image:loc>
      <image:title>Ohio Fluoride, QC</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/4450</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_5f72ec97-e185-4d5e-9769-a1bbf4201ba2.jpg?v=1770035749</image:loc>
      <image:title>Volatile Aromatics</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/4452</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_bcfd23f9-e2f3-4d51-8cd3-91cd09c8c126.jpg?v=1770035750</image:loc>
      <image:title>Volatile Aromatics, QC</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/4880</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_cda21178-db1b-4726-b941-e51cb490f464.jpg?v=1770035751</image:loc>
      <image:title>PAH-GC &amp; GCMS</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/4882</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_798ab058-c655-4836-8424-f5c2a1048a64.jpg?v=1770035753</image:loc>
      <image:title>PAH-GC &amp; GCMS, QC</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/4990</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_65d4866d-9f5d-498b-9558-137ec3d1d587.jpg?v=1770035754</image:loc>
      <image:title>Lithium, PT</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/4992</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_f7d1e1eb-ba7f-4237-a168-a932b758a391.jpg?v=1770035755</image:loc>
      <image:title>Lithium, QC</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/5150</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_af55a072-5b97-4471-bd7e-7587feba9206.jpg?v=1770035756</image:loc>
      <image:title>Solids, Concentrate, WS</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/5152</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_e4f0091d-7d55-4f4c-a3a0-d22c5207c92c.jpg?v=1770035758</image:loc>
      <image:title>Solids, Concentrate, PotableWatR™</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/5260</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_3856236b-7e9e-4df8-9da1-350f4ed2459b.jpg?v=1770035759</image:loc>
      <image:title>Inorganic Disinfection 2</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/5262</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_4e76fb90-a40b-47bd-bc35-fa4abeeeb56d.jpg?v=1770035760</image:loc>
      <image:title>Inorganic Disinfection 2 QC</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/5270</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_436a368c-018b-4970-b16b-5a07cb2b8fe6.jpg?v=1770035761</image:loc>
      <image:title>Inorganic Disinfection 1</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/5272</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_c2b6b0cd-f288-4a6c-834b-b7185d90f370.jpg?v=1770035763</image:loc>
      <image:title>Inorganic Disinfection 1 QC</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/5370</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_76098f3f-da47-4767-bde3-f263e9766d35.jpg?v=1770035765</image:loc>
      <image:title>PCB Congeners in Wastewater, WP CRM</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/5988</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_3cdd6507-4601-4f0c-a64e-bac15f4e753c.jpg?v=1770035767</image:loc>
      <image:title>PCB Congeners in Soil, Soil CRM</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/78102</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_8db3e8b3-8522-4fb0-bc84-ee55db32ca36.jpg?v=1770035767</image:loc>
      <image:title>Ammonium as NH4- 100 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/78104</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_47aabba6-2497-42e0-9bac-5003887f32ae.jpg?v=1770035768</image:loc>
      <image:title>Ammonium as N- 100 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/78202</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_d789f9d4-c0be-4b46-8680-402f94e418b1.jpg?v=1770035770</image:loc>
      <image:title>Acetate - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/78212</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_4c0b4ca1-1f2d-42ff-9d71-73fc2de8b910.jpg?v=1770035772</image:loc>
      <image:title>Iodide - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/071qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_8f8f83dc-506f-459e-a3e2-e010ae14ebfe.jpg?v=1770035773</image:loc>
      <image:title>Sulfide, WP QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/078a</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_c0a3c50f-eed8-458f-bb31-5de729542bc7.jpg?v=1770035774</image:loc>
      <image:title>Source Water Microbe - SM 9221</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/078aqr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_1b78e64b-2cc3-458c-afba-69658bf10db5.jpg?v=1770035775</image:loc>
      <image:title>Source Water Microbe - SM 9221, WS QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/078qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_010d890a-88ac-486e-b129-58f9f7b10c46.jpg?v=1770035776</image:loc>
      <image:title>Source Water Microbe, WS QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/080a</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_58a326f5-3518-46ea-ae6c-ab264992bc8b.jpg?v=1770035778</image:loc>
      <image:title>PotableWatR™ Coliform MicrobE™-</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/080b</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_5350acf2-1049-43c8-b31a-4f895312ef3d.jpg?v=1770035779</image:loc>
      <image:title>PotableWatR™ Coliform MicrobE™</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/080c</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_011230f9-378a-4a6b-a966-f87936589820.jpg?v=1770035781</image:loc>
      <image:title>PotableWatR™ Coliform MicrobE™</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/080d</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_f487ec2e-5065-46d0-b11d-75be614acc5d.jpg?v=1770035782</image:loc>
      <image:title>PotableWatR™ Coliform MicrobE™</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/083a</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_65ae3ecc-4380-4be4-bb48-6c29be24259c.jpg?v=1770035783</image:loc>
      <image:title>Wastewater Coliform Microbe - SM 9221</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/084qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_ed53a5b7-e2ec-423b-ae48-830e98e25c8a.jpg?v=1770035784</image:loc>
      <image:title>Heterotrophic Plate Count, WS QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/085aqr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_089c9673-23b5-4466-8344-78128ba75fcb.jpg?v=1770035786</image:loc>
      <image:title>Potable Water Coliform Microbe, WS QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/085bqr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_9c108eeb-941b-4813-9e0a-fecebbac638e.jpg?v=1770035787</image:loc>
      <image:title>Potable Water Coliform Microbe, WS QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/085cqr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_fb3f1202-2a8d-473f-825e-1bcfa6853831.jpg?v=1770035788</image:loc>
      <image:title>Potable Water Coliform Microbe, WS QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/085dqr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_5c5faf42-fa70-4cf6-b0a6-faf71c064d0f.jpg?v=1770035789</image:loc>
      <image:title>Potable Water Coliform Microbe, WS QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/1070c</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_c2b43c75-131e-4148-bdf1-79e599d5efc2.jpg?v=1770035791</image:loc>
      <image:title>Color, WP CRM</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/1070cqr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_308df0bc-7494-43d0-badd-c771dec46540.jpg?v=1770035792</image:loc>
      <image:title>Color, WP QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/1100qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_aadbdea0-b522-4237-b1ba-0815f27bc71d.png?v=1770035793</image:loc>
      <image:title>Volatiles in Gas Cylinder, AE QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/1101qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_658b045f-a1ff-451c-a394-629f77b23e67.jpg?v=1770035796</image:loc>
      <image:title>Volatiles on Sorbent, AE QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/1110qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_e1bc08b8-4be3-44e8-aa0e-9d1d3b10cade.jpg?v=1770035797</image:loc>
      <image:title>Semivolatiles on Polyurethane Foam, AE QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/1111qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_c2b1307a-9af3-4bf5-b216-e29e319b6352.jpg?v=1770035799</image:loc>
      <image:title>Organochlorine Pesticides on PUF, AE QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/1112qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_6d9b8217-3648-447d-b1cc-698975c323b7.jpg?v=1770035801</image:loc>
      <image:title>PCBs on Polyurethane Foam, AE QR</image:title>
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      <image:title>Hexavalent Chromium, WS QR</image:title>
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      <image:title>Vanadium, WS QR</image:title>
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      <image:title>UV 254 Absorbance, WS QR</image:title>
      <image:caption></image:caption>
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      <image:title>Dioxin, WS QR</image:title>
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      <image:title>Organophosphorus Pesticides (OPP), WP QR</image:title>
      <image:caption></image:caption>
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      <image:title>Mercury, WS QR</image:title>
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      <image:title>o-Phosphate Nutrients, WS QR</image:title>
      <image:caption></image:caption>
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      <image:title>Organic Carbon, WS QR</image:title>
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      <image:title>Total Organic Halides (TOX), WP QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <image:image>
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      <image:title>Nitrogen Pesticides, WP QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Chloral Hydrate, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <image:image>
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      <image:title>Low-Level Nitroaromatics &amp; Nitramines, WP QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <image:image>
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      <image:title>Organophosphorus Pesticides (OPP), WS QR</image:title>
      <image:caption></image:caption>
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    <image:image>
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      <image:title>Low-Level 1,2,3-TCP, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <image:image>
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      <image:title>Unregulated Volatiles, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Haloacetic Acids (HAA), WS QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>1,4-Dioxane, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <image:image>
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      <image:title>Semivolatiles #1, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Semivolatiles #2 Herbicides, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>EDB/DBCP/TCP, WP QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Hardness, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Nitrite, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
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    <image:image>
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      <image:title>Residual Chlorine, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <image:image>
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      <image:title>Metals, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Inorganics, WS QR</image:title>
      <image:caption></image:caption>
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    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Turbidity, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Toxaphene, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Halomethanes (THMs), WS QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Regulated Volatiles, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Chlorinated Acid Herbicides, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Chlordane, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_e00a5b79-cf0a-4592-9a03-a54b4a1a6ea2.jpg?v=1770035922</image:loc>
      <image:title>EDB/DBCP/TCP, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Carbamate/Carbamoxyloxime Pesticides, WS QR</image:title>
      <image:caption></image:caption>
    </image:image>
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  <url>
    <loc>https://esslabshop.com/products/708qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>PCBs as Decachlorobiphenyl, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/709qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Pesticides, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Volatiles, WP QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Base/Neutrals, WP QR</image:title>
      <image:caption></image:caption>
    </image:image>
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  <url>
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    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Acids, WP QR</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/713qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Organochlorine Pesticides, WP QR</image:title>
      <image:caption></image:caption>
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      <image:title>Base/Neutrals &amp; Acids in Soil, Soil QR</image:title>
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      <image:title>Organochlorine Pesticides in Soil, Soil QR</image:title>
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      <image:title>TCLP Volatiles in Soil, Soil QR</image:title>
      <image:caption></image:caption>
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      <image:title>TCLP Organochlorine Pesticides in Soil, Soil QR</image:title>
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      <image:title>PFAS in Drinking Water, WS QR</image:title>
      <image:caption></image:caption>
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      <image:title>PCBs in Water, PriorityPollutnT™ (1)</image:title>
      <image:caption></image:caption>
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      <image:title>PCBs, WP QR</image:title>
      <image:caption></image:caption>
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  <url>
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      <image:title>TCLP Semivolatiles in Soil, Soil QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
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    <changefreq>daily</changefreq>
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      <image:title>Iodine-131, RAD QR</image:title>
      <image:caption></image:caption>
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      <image:title>Naturals, RAD QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
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      <image:title>Tritium, RAD QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <changefreq>daily</changefreq>
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      <image:title>Strontium-89/90, RAD QR</image:title>
      <image:caption></image:caption>
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  <url>
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      <image:title>Gamma Emitters, RAD QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <changefreq>daily</changefreq>
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      <image:title>Gross Alpha/Beta, RAD QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <changefreq>daily</changefreq>
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      <image:title>BTEX &amp; MTBE, WP QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <changefreq>daily</changefreq>
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      <image:title>BTEX &amp; MTBE in Soil, Soil QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <changefreq>daily</changefreq>
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      <image:title>Gasoline Range Organics (GRO), WP QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <changefreq>daily</changefreq>
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      <image:title>Gasoline Range Organics (GRO) in Soil, Soil QR</image:title>
      <image:caption></image:caption>
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  <url>
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      <image:title>Diesel Range Organics (DRO), WP QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <changefreq>daily</changefreq>
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      <image:title>Diesel Range Organics (DRO) in Soil, Soil QR</image:title>
      <image:caption></image:caption>
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      <image:title>Bromide, WP QR</image:title>
      <image:caption></image:caption>
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    <changefreq>daily</changefreq>
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      <image:title>Nitrite, WP QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <changefreq>daily</changefreq>
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      <image:title>Wisconsin Diesel Range Organics (DRO), WP QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Wisconsin Gas Range Org (GRO/PVOC), WP QR</image:title>
      <image:caption></image:caption>
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    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:title>Silica, WP QR</image:title>
      <image:caption></image:caption>
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    <changefreq>daily</changefreq>
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      <image:title>Surfactants-MBAS, WP QR</image:title>
      <image:caption></image:caption>
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      <image:title>Turbidity, WP QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>pH, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Surfactants-MBAS, WS QR</image:title>
      <image:caption></image:caption>
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      <image:title>Texas High-Level Fuels (TPH), WP QR</image:title>
      <image:caption></image:caption>
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      <image:title>Arizona TPH in Soil, Soil QR</image:title>
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    <image:image>
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      <image:caption></image:caption>
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      <image:title>PCBs in Oil (1)</image:title>
      <image:caption></image:caption>
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    <loc>https://esslabshop.com/products/859c</loc>
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    <image:image>
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      <image:title>Color, WS PT</image:title>
      <image:caption></image:caption>
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  <url>
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    <image:image>
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      <image:caption></image:caption>
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      <image:title>Carbamate Pesticides, WP QR</image:title>
      <image:caption></image:caption>
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  <url>
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      <image:title>Gasoline Additives, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <changefreq>daily</changefreq>
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      <image:title>Perchlorate, WS QR</image:title>
      <image:caption></image:caption>
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  <url>
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    <changefreq>daily</changefreq>
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      <image:title>Settleable Solids, WP QR</image:title>
      <image:caption></image:caption>
    </image:image>
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  <url>
    <loc>https://esslabshop.com/products/913qr</loc>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_8ce1ce53-a8b4-472a-a939-dd7b55e8c2f2.jpg?v=1770035992</image:loc>
      <image:title>Volatile Solids, WP QR</image:title>
      <image:caption></image:caption>
    </image:image>
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  <url>
    <loc>https://esslabshop.com/products/914qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_8be6123c-6b88-4b47-992f-1b0abd69f43a.jpg?v=1770035994</image:loc>
      <image:title>Corrosivity/pH in Soil, Soil QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/915qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_86bcb94e-b907-4d89-a3e1-3b4d5b1e1d3f.jpg?v=1770035995</image:loc>
      <image:title>Acidity, WP QR</image:title>
      <image:caption></image:caption>
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  </url>
  <url>
    <loc>https://esslabshop.com/products/917qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_5f6c6f5b-4038-483e-b7e9-cc9eea0055d8.jpg?v=1770035995</image:loc>
      <image:title>Low-Level Total Residual Chlorine (TRC), WP QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/919qr</loc>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_8b976d3b-bb3d-432b-9f45-dbfbbb687e17.jpg?v=1770035997</image:loc>
      <image:title>Boron, WP QR</image:title>
      <image:caption></image:caption>
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  </url>
  <url>
    <loc>https://esslabshop.com/products/920qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
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    <image:image>
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      <image:title>Nitroaromatics &amp; Nitramines in Soil, Soil QR</image:title>
      <image:caption></image:caption>
    </image:image>
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  <url>
    <loc>https://esslabshop.com/products/921qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
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    <image:image>
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      <image:title>Hexavalent Chromium in Soil, Soil QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/924qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>Ready-to-Use VOAs in Soil, Soil QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/925qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_fddc49b1-ad79-4651-9b85-abb1b63f75d6.jpg?v=1770036001</image:loc>
      <image:title>Organophosphorus Pesticide (OPP) in Soil, Soil QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/926qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_dc40eb88-5a3d-474f-83c4-4b5b2f07a424.jpg?v=1770036001</image:loc>
      <image:title>Carbamate Pesticides in Soil, Soil QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/928qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_4927859d-80f6-4fba-8041-82b8433f239b.jpg?v=1770036002</image:loc>
      <image:title>Glycols in Soil, Soil QR</image:title>
      <image:caption></image:caption>
    </image:image>
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  <url>
    <loc>https://esslabshop.com/products/930qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_34b70b90-7e7e-47fa-a542-5d20f55063bc.jpg?v=1770036003</image:loc>
      <image:title>Uranium, WS QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/931qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_4c81f7c3-b2ce-4237-ba92-3c938ee669a4.jpg?v=1770036005</image:loc>
      <image:title>Low-Level Mercury, WP QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/977qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_327243db-b6e5-41d0-9279-04a5e93154dc.jpg?v=1770036006</image:loc>
      <image:title>pH, WP QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/979qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_d0797a9a-e119-4c61-ba7f-f81a5eec5f25.jpg?v=1770036007</image:loc>
      <image:title>Ignitability/Flash Point, Soil QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/980qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_ff123507-9eaf-415c-bfcb-f7a48b96cc34.jpg?v=1770036009</image:loc>
      <image:title>Corrosivity, WS QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/983qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_d07635d4-5c5a-427a-b513-8c6f88c9b827.jpg?v=1770036009</image:loc>
      <image:title>Cyanide, WS QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/984qr</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_4edfa003-975d-4061-83fb-411dd417b732.png?v=1770036011</image:loc>
      <image:title>Hexavalent Chromium, WP QR</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/am241</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_8b01eb57-0f99-4755-9d9f-264c2712cdc3.jpg?v=1770036012</image:loc>
      <image:title>Americium-241 LCS/MS</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/ba133</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_3adc3910-c6c0-4134-ad43-8d6b6ea26030.jpg?v=1770036013</image:loc>
      <image:title>Barium-133, LCS/MS</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/co60</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_62af9b94-8661-4dd6-8577-bf5fc9489d92.jpg?v=1770036013</image:loc>
      <image:title>Cobalt-60, LCS/MS</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/cs134</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_c1d19ca0-c824-4df8-a471-91b8bb77c817.jpg?v=1770036014</image:loc>
      <image:title>Cesium-134, LCS/MS</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/cs137</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_fcd7fe88-ecfb-447e-a677-b846af0c9e6c.jpg?v=1770036016</image:loc>
      <image:title>Cesium-137, LCS/MS</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/ga</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_81346710-6719-494d-bbbe-9d6c3109321c.jpg?v=1770036017</image:loc>
      <image:title>Gross Alpha (Th-230), LCS/MS</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/gab</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_b5a0fbc3-73f6-4352-a712-fdd4d2d272ae.jpg?v=1770036018</image:loc>
      <image:title>Gross Alpha/Beta, LCS/MS</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/gb</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_77ea7224-87fd-459a-83d7-5c49f84ed41f.jpg?v=1770036019</image:loc>
      <image:title>Gross Beta (Cs-137), LCS/MS</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/h3</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_ee9810d0-41ca-4713-acff-90e00adb5de2.jpg?v=1770036020</image:loc>
      <image:title>Tritium, LCS/MS</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/k01</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_df6bf7d3-4f29-4a50-87a1-694d5f9f9dff.jpg?v=1770036021</image:loc>
      <image:title>Bismuth - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/k04</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_fecbc665-648a-4742-bea8-3255ceab53f4.jpg?v=1770036022</image:loc>
      <image:title>Lithium - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/k08</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_025b595f-e50a-426f-92af-900b1f11daf9.jpg?v=1770036024</image:loc>
      <image:title>Yttrium - 1000 mg/L, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/k10</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_f90652d9-a584-47a9-bb7f-0dc9966d150a.jpg?v=1770036025</image:loc>
      <image:title>Calcium - 1000 mg/L, Unpreserved, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/k11</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_6b429e52-75ee-47b7-b5e4-a7602fac7d4a.jpg?v=1770036026</image:loc>
      <image:title>Magnesium - 1000 mg/L, Unpreserved, 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/pfas10001</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_12ca5e28-48df-4855-a659-dc0d17caa281.jpg?v=1770036027</image:loc>
      <image:title>PFAS Secondary Source Std, Wastewater/Solids</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/pfas10002</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_237e3418-b98a-4de8-9946-b70c863f8a11.jpg?v=1770036028</image:loc>
      <image:title>PFAS Secondary Source Std, Drinking Water</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/pu238</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_97e8427a-e7d4-4ee8-933b-31e3b88f6cbd.jpg?v=1770036029</image:loc>
      <image:title>Plutonium-238, LCS/MS</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/pu239</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_287db341-043c-4b66-b988-a0982c468d58.jpg?v=1770036030</image:loc>
      <image:title>Plutonium-239, LCS/MS</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/ra226</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_4cdf79c0-76ee-4bdc-af80-3f3f9bceffc0.jpg?v=1770036031</image:loc>
      <image:title>Radium-226, LCS/MS</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/ra228</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_bc5b231f-851c-46c2-a35d-2f5ae4c03f46.jpg?v=1770036032</image:loc>
      <image:title>Radium-228, LCS/MS</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/sr89</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_e3fc3c27-f304-4920-ae6e-773d4a700cc6.jpg?v=1770036034</image:loc>
      <image:title>Strontium-89, LCS/MS</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/sr90</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_376bcace-41f1-4571-b301-c321113468ed.jpg?v=1770036034</image:loc>
      <image:title>Strontium-90, LCS/MS</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/tms001</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_96869814-694b-4a6e-a341-c89da9601a88.jpg?v=1770036036</image:loc>
      <image:title>ICP-MS Trace Metals</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/tms002</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_b0e8c75b-1917-4c32-8834-182530cf08d3.jpg?v=1770036038</image:loc>
      <image:title>ICP-MS Major Cations</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/unat</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_d270a5c7-47d0-4f02-8061-2d8901ded515.jpg?v=1770036038</image:loc>
      <image:title>Uranium, Natural, LCS/MS</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/zn65</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_927438e4-9a07-4a1f-9977-6c0d60102a1a.jpg?v=1770036039</image:loc>
      <image:title>Zinc-65, LCS/MS</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/01001</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_24c00938-64b7-4176-9acf-fe8f0199c44f.jpg?v=1770042568</image:loc>
      <image:title>25 uS/cm Conductivity -- 1 L (Kit)</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/01200</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_07ad4583-b544-4970-8771-c59865e23bdf.jpg?v=1770042566</image:loc>
      <image:title>25 uS/cm Conductivity  -- 1L</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/01300</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_208f29ef-eadb-4625-a11b-901221ddd0f8.jpg?v=1770042568</image:loc>
      <image:title>25 uS/cm Conductivity -- 500 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/01350</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_7a3167be-adae-49ec-bae1-aa1be20a7430.png?v=1770042568</image:loc>
      <image:title>25 uS/cm Conductivity -- 250 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/01400</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_598a5442-cad2-4bd6-9463-0ed6cd02d90c.png?v=1770042569</image:loc>
      <image:title>25 uS/cm Conductivity -- 125mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/01410</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_9183e461-ab13-436a-8b48-65d4417820c9.jpg?v=1770042571</image:loc>
      <image:title>1000 uS/cm Conductivity -- 125mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/01420</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_d581d3ff-6fc1-4e74-8d40-1f17a29d8305.jpg?v=1770042572</image:loc>
      <image:title>1000 uS/cm Conductivity -- 500 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/01430</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_c6e9195c-a4b9-42b5-987d-496f93c6deaf.jpg?v=1770042572</image:loc>
      <image:title>1000 uS/cm Conductivity -- 1 L</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/01500</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_331f91f2-f695-40e6-a87d-81131538f0cc.jpg?v=1770042573</image:loc>
      <image:title>146.93 uS/cm Conductivity Kit -- 1 L (Kit)</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/01600</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_b1ef35f7-a01b-4b6a-a9f6-dcb03049d66b.jpg?v=1770042574</image:loc>
      <image:title>146.93 uS/cm Conductivity Kit -- 500mL (Kit)</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/01610</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_8f430aab-6f02-4797-b755-a75f3891004c.jpg?v=1770042576</image:loc>
      <image:title>1408.8 uS/cm Conductivity -- 125mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/01620</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_9d06c161-1116-4e5d-bff2-6d43987cbc83.jpg?v=1770042577</image:loc>
      <image:title>1408.8 uS/cm Conductivity -- 1 L</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/01630</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_290b7dc0-be65-4d5e-9897-a5699eaa5580.jpg?v=1770042577</image:loc>
      <image:title>10,000 uS/cm Conductivity -- 125mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/01640</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_c89175a0-4eec-403d-a00e-9024731c057c.jpg?v=1770042578</image:loc>
      <image:title>10,000 uS/cm Conductivity -- 1 L</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/01645</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_14e2ce06-e0fd-40a1-a011-a103826fb23b.png?v=1770042579</image:loc>
      <image:title>30100 uS/cm Conductivity-250 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/01650</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_7e323502-39b2-4e0c-bd82-03e961119047.jpg?v=1770042580</image:loc>
      <image:title>100,000 uS/cm Conductivity -- 125mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/01655</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_fc40197f-9aa4-45e0-aa98-bf768b6507fd.jpg?v=1770042582</image:loc>
      <image:title>100,000 uS/cm Conductivity -- 500 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/01660</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_7c15da42-1511-4d98-b536-e86ec10faba6.jpg?v=1770042582</image:loc>
      <image:title>100,000 uS/cm Conductivity -- 1 L</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/01661</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_536a2d94-5052-4927-9f9a-1569bbd347ca.jpg?v=1770042583</image:loc>
      <image:title>200,000 uS/cm Conductivity -- 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/01662</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_574a1024-5146-43af-852f-a13c817591d1.jpg?v=1770042587</image:loc>
      <image:title>200,000 uS/cm Conductivity -- 500 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/01663</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_1054a339-0434-4869-b1c9-1c9414f0563c.jpg?v=1770042585</image:loc>
      <image:title>300,000 uS/cm Conductivity -- 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/01664</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
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    <image:image>
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      <image:title>0.500 mg/L C from NIST Sucrose -- 1 L</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/10900</loc>
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      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_be6d44f7-621e-44a6-8bd6-e552895f8404.png?v=1770042626</image:loc>
      <image:title>0.750 mg/L C from NIST Sucrose -- 40 mL</image:title>
      <image:caption></image:caption>
    </image:image>
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  <url>
    <loc>https://esslabshop.com/products/10915</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_64ff4e80-3177-4ef8-a24f-0676025c0957.png?v=1770042627</image:loc>
      <image:title>0.750 mg/L C from NIST Sucrose -- 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
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  <url>
    <loc>https://esslabshop.com/products/11002</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_11eea0bc-4e16-4eb0-a7d8-127fa13ec80a.jpg?v=1770042629</image:loc>
      <image:title>Shimadzu TOC-V Validation Kit</image:title>
      <image:caption></image:caption>
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  </url>
  <url>
    <loc>https://esslabshop.com/products/11003</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_16470456-16dc-4179-ac88-19ebbf390682.jpg?v=1770042630</image:loc>
      <image:title>Shimadzu TOC-V HS Validation Kit</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/11004</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_9be291b6-fbe4-4458-bc26-069ea7ff3fc0.png?v=1770042630</image:loc>
      <image:title>Shimadzu TOC-V Wet Chem Validation Kit</image:title>
      <image:caption></image:caption>
    </image:image>
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  <url>
    <loc>https://esslabshop.com/products/11005</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_d61bd31d-db54-4558-9012-c8ff303da429.png?v=1770042631</image:loc>
      <image:title>Shimadzu TOC-V Multi Calibration Kit</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/11010</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_02cd662d-a097-4e47-9f23-7cd3d79a6601.jpg?v=1770042633</image:loc>
      <image:title>0.750 mg/L C from NIST Sucrose -- 500 mL HDPE</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11200</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_c1340d6c-3663-4df9-af2e-f4b965198bf2.png?v=1770042633</image:loc>
      <image:title>1.00 mg/L C from NIST Sucrose -- 40 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11215</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_296cf169-eed2-4f43-8799-381e7f06395c.png?v=1770042635</image:loc>
      <image:title>1.00 mg/L C from NIST Sucrose -- 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11221</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_f43fc1be-a5bf-41b1-b235-1b35bc75213e.png?v=1770042635</image:loc>
      <image:title>1.00 mg/L C from NIST Sucrose -- 250 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11300</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_1ec5af50-7f65-494a-aa43-823b8c5cd034.jpg?v=1770042637</image:loc>
      <image:title>1.00 mg/L C from NIST Sucrose -- 500 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11400</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_07aff1af-2381-418e-a44c-fc287e516724.png?v=1770042638</image:loc>
      <image:title>1.00 mg/L C from NIST Sucrose -- 1 L</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11411</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_474977a9-620a-4d6a-a959-df067f97767b.jpg?v=1770042639</image:loc>
      <image:title>Reagent Water Blank (Thornton) -- 500 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11412</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_0620e9ad-602e-41e5-98ea-b6f86fe5f34c.jpg?v=1770042640</image:loc>
      <image:title>0.250 mg/L C from NIST Sucrose (Thornton) -- 500 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11413</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_4d487fb6-fb9b-4592-96aa-c6be4a72db79.jpg?v=1770042642</image:loc>
      <image:title>0.500 mg/L C from NIST Sucrose (Thornton) -- 500 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11414</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_8635d050-d7e6-4d58-b05e-184135ff1cc6.jpg?v=1770042642</image:loc>
      <image:title>Thornton 5000 Calibration Kit</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11500</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_11d306e4-e8b9-4dc7-93ca-d282c3de1119.png?v=1770042643</image:loc>
      <image:title>1.25 mg/L C from NIST Sucrose -- 40 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11520</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_a3130529-d8df-4b8d-a1c0-dfd358ecc72d.jpg?v=1770042645</image:loc>
      <image:title>1.25 mg/L C from NIST Sucrose -- 125 mL HDPE</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11530</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_f3d6095a-a799-4037-b98e-c5779b84bebf.jpg?v=1770042647</image:loc>
      <image:title>1.25 mg/L C from NIST Sucrose -- 250 mL HDPE</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11660</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_25cb4889-4a2a-472e-9421-4f19592f1fc6.jpg?v=1770042647</image:loc>
      <image:title>5.0 ppm from NIST Sucrose -- 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11662</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_2d83e719-1b49-4e84-bd3c-a8bf626b1892.jpg?v=1770042649</image:loc>
      <image:title>5.0 ppm NIST Sucrose -- 500 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11663</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_be37725f-6a5d-4b1a-b3b2-ef022a559706.jpg?v=1770042649</image:loc>
      <image:title>10.0 ppm NIST Sucrose -- 250 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11681</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_eb0b49b4-d130-44b5-a664-0db156dd568d.png?v=1770042649</image:loc>
      <image:title>25.0 ppm NIST Sucrose - 40 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11682</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_3138c415-bc08-4a58-8a40-c9388c74f098.png?v=1770042651</image:loc>
      <image:title>50.0 ppm NIST Sucrose - 40 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11701</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_efcb4b3c-a3a1-4626-87a7-07f3b7407c43.png?v=1770042652</image:loc>
      <image:title>0.050 mg/L C from NIST KHP -- 40 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11703</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_9faf6308-97b2-4efd-be4e-849a5e17808f.png?v=1770042652</image:loc>
      <image:title>0.050 mg/L C from NIST KHP -- 250 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11704</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_d7c819cc-32f4-4d5d-8350-ed7bdf279c23.png?v=1770042653</image:loc>
      <image:title>0.060 mg/L C from NIST KHP -- 40 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11707</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_a1079c03-fff4-427a-b46b-2a7be3149538.png?v=1770042654</image:loc>
      <image:title>0.070 mg/L C from NIST KHP -- 40 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11710</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_64247b55-6d26-4122-b0dc-cd994697473b.png?v=1770042655</image:loc>
      <image:title>0.080 mg/L C from NIST KHP -- 40 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11713</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_188d96c6-437a-41da-a52c-5099e247a843.png?v=1770042657</image:loc>
      <image:title>0.090 mg/L C from NIST KHP -- 40 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11716</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_c565538f-6084-48f4-927b-5f26e1b1e9e7.png?v=1770042658</image:loc>
      <image:title>0.100 mg/L C from NIST KHP -- 40 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11718</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_58997de1-ee15-4947-8f77-05576266cb48.png?v=1770042659</image:loc>
      <image:title>0.100 mg/L C from NIST KHP -- 250 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11719</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_f76e8cd0-698e-4123-9710-403119a13d6e.png?v=1770042660</image:loc>
      <image:title>0.250 mg/L C from NIST KHP -- 40 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11720</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_349884f2-0c94-463b-8369-7b3040754cc8.jpg?v=1770042663</image:loc>
      <image:title>0.250 mg/L C from NIST KHP -- 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11721</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_e8cc4213-c6b5-487a-a687-2d77f8c38443.png?v=1770042662</image:loc>
      <image:title>0.250 mg/L C from NIST KHP -- 250 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11722</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_0e48fffd-dd88-4bd2-b6a5-90c55740cb5d.jpg?v=1770042664</image:loc>
      <image:title>0.250 mg/L C from NIST KHP -- 500 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11723</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_6522934e-ad7d-4bf8-9c08-69f97354e636.jpg?v=1770042666</image:loc>
      <image:title>0.250 mg/L C from NIST KHP -- 1 L</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11725</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_1a7359c3-82ad-49e6-b49e-b6f7ef35e6a9.png?v=1770042666</image:loc>
      <image:title>0.500 mg/L C from NIST KHP -- 40 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11730</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_3b631bdd-bc8b-4e3b-921d-401fbbb73191.jpg?v=1770042668</image:loc>
      <image:title>0.500 mg/L C from NIST KHP -- 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/11735</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
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      <image:title>0.750 mg/L C from NIST KHP -- 250 mL</image:title>
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      <image:title>1.00 mg/L C from NIST KHP -- 40 mL</image:title>
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      <image:title>1.00 mg/L C from NIST KHP -- 125 mL</image:title>
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  <url>
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      <image:title>1.00 mg/L C from NIST KHP -- 250 mL</image:title>
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  <url>
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      <image:title>1.00 mg/L C from NIST KHP -- 500 mL</image:title>
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  <url>
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      <image:title>1.00 mg/L C from NIST KHP -- 1 L</image:title>
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  <url>
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      <image:title>1.50 mg/L C from NIST KHP -- 40 mL</image:title>
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  <url>
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      <image:title>2.00 mg/L C from NIST KHP -- 40 mL</image:title>
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  <url>
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      <image:title>2.00 mg/L C from NIST KHP -- 125 mL</image:title>
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  <url>
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      <image:title>2.00 mg/L C from NIST KHP -- 250 mL</image:title>
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  <url>
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      <image:title>2.00 mg/L C from NIST KHP -- 500 mL</image:title>
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      <image:title>2.00 mg/L C from NIST KHP -- 1 L</image:title>
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  <url>
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      <image:title>4.00 mg/L C from NIST KHP -- 40 mL</image:title>
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  <url>
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      <image:title>4.00 mg/L C from NIST KHP -- 125 mL</image:title>
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  <url>
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      <image:title>5.00 mg/L C from NIST KHP -- 40 mL</image:title>
      <image:caption></image:caption>
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  <url>
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      <image:title>TOC/IC Validation Challenge</image:title>
      <image:caption></image:caption>
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  <url>
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    <changefreq>daily</changefreq>
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      <image:title>5.00 mg/L C from NIST KHP -- 125 mL</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/12420</loc>
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      <image:title>5.00 mg/L C from NIST KHP -- 250 mL</image:title>
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  <url>
    <loc>https://esslabshop.com/products/12500</loc>
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      <image:title>5.00 mg/L C from NIST KHP -- 500 mL</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/12600</loc>
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      <image:title>5.00 mg/L C from NIST KHP -- 1 L</image:title>
      <image:caption></image:caption>
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  <url>
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    <changefreq>daily</changefreq>
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      <image:title>10.0 mg/L C from NIST KHP -- 40 mL</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/12710</loc>
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      <image:title>10.0 mg/L C from NIST KHP -- 125 mL</image:title>
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  <url>
    <loc>https://esslabshop.com/products/12720</loc>
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    <changefreq>daily</changefreq>
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      <image:title>10.0 mg/L C from NIST KHP -- 250 mL</image:title>
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  <url>
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    <changefreq>daily</changefreq>
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      <image:title>10.0 mg/L C from NIST KHP -- 500 mL</image:title>
      <image:caption></image:caption>
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    <loc>https://esslabshop.com/products/12903</loc>
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    <changefreq>daily</changefreq>
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      <image:title>20.0 mg/L C from NIST KHP -- 125 mL</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/12914</loc>
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    <changefreq>daily</changefreq>
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      <image:title>12.5 mg/L C from NIST KHP -- 250 mL</image:title>
      <image:caption></image:caption>
    </image:image>
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  <url>
    <loc>https://esslabshop.com/products/12940</loc>
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    <changefreq>daily</changefreq>
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      <image:title>15.0 mg/L C from NIST KHP -- 40 mL</image:title>
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    <loc>https://esslabshop.com/products/13000</loc>
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      <image:title>25.0 mg/L C from NIST KHP -- 40 mL</image:title>
      <image:caption></image:caption>
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  <url>
    <loc>https://esslabshop.com/products/13020</loc>
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    <changefreq>daily</changefreq>
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      <image:title>25.0 mg/L C from NIST KHP -- 125 mL</image:title>
      <image:caption></image:caption>
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  </url>
  <url>
    <loc>https://esslabshop.com/products/13040</loc>
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    <changefreq>daily</changefreq>
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      <image:title>25.0 mg/L C from NIST KHP -- 250 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/13210</loc>
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    <changefreq>daily</changefreq>
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      <image:title>30.0 mg/L C from NIST KHP -- 40 mL</image:title>
      <image:caption></image:caption>
    </image:image>
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  <url>
    <loc>https://esslabshop.com/products/13225</loc>
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    <changefreq>daily</changefreq>
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      <image:title>50.0 mg/L C from NIST KHP -- 40 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/13226</loc>
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    <changefreq>daily</changefreq>
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      <image:title>50.0 mg/L C from NIST KHP -- 125 mL</image:title>
      <image:caption></image:caption>
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  </url>
  <url>
    <loc>https://esslabshop.com/products/13228</loc>
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    <changefreq>daily</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_d52749ad-2d48-41aa-a2a0-aabfa66398c0.png?v=1770042713</image:loc>
      <image:title>50.0 mg/L C from NIST KHP -- 250 mL</image:title>
      <image:caption></image:caption>
    </image:image>
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    <loc>https://esslabshop.com/products/13230</loc>
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    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_d64550dc-fb78-4dc2-b44f-e9fe2b85b0a8.jpg?v=1770042716</image:loc>
      <image:title>50.0 mg/L C from NIST KHP -- 500 mL</image:title>
      <image:caption></image:caption>
    </image:image>
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  <url>
    <loc>https://esslabshop.com/products/13275</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_4514ee7c-823f-4187-aa36-7c3e18953d2d.png?v=1770042716</image:loc>
      <image:title>100 mg/L C from NIST KHP -- 40 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/13276</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_1e9bd504-63df-4051-8f59-49c3527770ad.jpg?v=1770042718</image:loc>
      <image:title>100 mg/L C from NIST KHP -- 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/13277</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_417956f4-8cc0-41de-b719-8e81f8f170b3.png?v=1770042719</image:loc>
      <image:title>100 mg/L C from NIST KHP -- 250 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/13278</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_fd534740-f5c2-4dfe-ad6c-9292ece5a1a1.jpg?v=1770042721</image:loc>
      <image:title>100 mg/L C from NIST KHP -- 500 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/13282</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_c92e0453-5499-4c23-b991-afaa3b3ae827.png?v=1770042722</image:loc>
      <image:title>150 mg/L C from NIST KHP -- 250 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/13287</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_1fa42427-941c-4508-9485-d93828d30bad.png?v=1770042723</image:loc>
      <image:title>200 mg/L C from NIST KHP -- 250 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/13290</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_f9de1ac9-de22-4eb6-ad09-602b7c7a113d.png?v=1770042724</image:loc>
      <image:title>250 mg/L C from NIST KHP -- 40 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/13292</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_b27998fb-c157-41bc-8ff1-a873410f5b7f.png?v=1770042725</image:loc>
      <image:title>250 mg/L C from NIST KHP -- 250 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/13295</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_fecb003c-0e69-444e-bfd4-82040774fb3b.png?v=1770042726</image:loc>
      <image:title>500 mg/L C from NIST KHP -- 40 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/13296</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_96032b27-6419-4b6f-af04-f5836f5eb61a.jpg?v=1770042729</image:loc>
      <image:title>500 mg/L C from NIST KHP -- 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/13297</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_122a8146-1b4c-42a1-936a-c0ebcea826c4.jpg?v=1770042730</image:loc>
      <image:title>500 mg/L C from NIST KHP -- 1 L</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/13298</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_67f29afb-a0fe-40ef-86ef-e3f272280384.jpg?v=1770042731</image:loc>
      <image:title>500 mg/L C from NIST KHP -- 500 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/13299</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_68bd49c8-e1ad-430f-b639-ec152c595fa6.jpg?v=1770042733</image:loc>
      <image:title>1000 mg/L C from NIST KHP -- 500 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/13301</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_d6301ebc-e2be-4459-ac5a-1ef76954cc8e.jpg?v=1770042732</image:loc>
      <image:title>TOC Calibration Blank -- PAT 700</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/13305</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_31391947-09f1-4cef-a0b3-d6bf1e64e388.jpg?v=1770042734</image:loc>
      <image:title>1000 mg/L C from NIST KHP -- 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/13306</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_38c15bf9-0365-4f54-8f01-6c11ffd98735.png?v=1770042734</image:loc>
      <image:title>1000 mg/L C from NIST KHP -- 250 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/13308</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_165f401f-d82d-4955-9206-a04282bc43bd.jpg?v=1770042736</image:loc>
      <image:title>2000 mg/L C from NIST KHP -- 125 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/13309</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_651315de-a197-4cb7-9012-aaba5d8cd362.png?v=1770042736</image:loc>
      <image:title>2000 mg/L C from NIST KHP -- 250 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/13335</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_0a465685-955c-4858-9619-487de57f7807.png?v=1770042737</image:loc>
      <image:title>2.5 mg/L C from NIST KHP -- 250 mL</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/13700</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_0c9c670a-d566-49ef-9651-75f7b320e1fc.png?v=1770042738</image:loc>
      <image:title>TOC Calibration Blank -- Sievers 400</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/13800</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_78ab4826-cb62-4ff4-b0ce-a35bb6783108.png?v=1770042739</image:loc>
      <image:title>0.250 mg/L C from NIST Sucrose -- Sievers 400</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/13900</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_e6b5fd42-251f-4cd8-b678-8dbf5cd043dd.png?v=1770042740</image:loc>
      <image:title>0.500 mg/L C from NIST Sucrose -- Sievers 400</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/14000</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_96138fc2-16a5-4c55-9cdc-48cb68160c60.png?v=1770042741</image:loc>
      <image:title>0.750 mg/L C from NIST Sucrose -- Sievers 400</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/14100</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_cf711c43-4bc0-4fd8-a91f-437dec270109.png?v=1770042743</image:loc>
      <image:title>1.25 mg/L C from NIST Sucrose -- Sievers 400</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/14101</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_90d77088-4131-4dfc-92d8-4ea518e61998.png?v=1770042744</image:loc>
      <image:title>Sievers 400 Calibration Set</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/14104</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_b1dda750-ecd8-440a-9754-e9a6c3337b7f.png?v=1770042745</image:loc>
      <image:title>&lt;0.1 NTU Turbidity Cal STND</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/14105</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_6d76e48a-5520-457b-aeb2-5126ed4b7ee9.jpg?v=1770042748</image:loc>
      <image:title>25 NTU Turbidity Cal Standard - 1L</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/14106</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_c0ae0ce7-058e-432b-b4c7-9b237cd78112.jpg?v=1770042749</image:loc>
      <image:title>50 NTU Turbidity Cal Standard - 1L</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/14107</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_bb894d4f-d750-4c35-9b6c-3d7d9d8868dc.jpg?v=1770042750</image:loc>
      <image:title>100 NTU Turbidity Cal Standard - 1L</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/14108</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_5bb4c8a9-96ee-4cec-9e92-16d48fe33f41.jpg?v=1770042752</image:loc>
      <image:title>150 NTU Turbidity Cal Standard - 1L</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/14109</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_02b7bb96-80dc-4c2e-91e0-7abe4119c580.jpg?v=1770042753</image:loc>
      <image:title>175 NTU Turbidity Cal Standard - 1L</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/14110</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_464c2a42-8d07-4326-bc35-db95459b5d50.jpg?v=1770042754</image:loc>
      <image:title>200 NTU Turbidity Cal Standard - 1L</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/14111</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_5acb6756-b17e-4c99-91b2-4fa98ac39dd9.jpg?v=1770042755</image:loc>
      <image:title>250 NTU Turbidity Cal Standard - 1L</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/14112</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_52f79af4-83d2-451e-bb25-1bbee4d898a1.jpg?v=1770042756</image:loc>
      <image:title>300 NTU Turbidity Cal Standard - 1L</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/14114</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_ce048363-73a0-4f5a-8a1b-5a8cdef4946c.jpg?v=1770042756</image:loc>
      <image:title>400 NTU Turbidity Cal Standard - 1L</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/14115</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_9b16e8e7-ba14-4fbc-bede-f6f42c2ce20a.jpg?v=1770042758</image:loc>
      <image:title>450 NTU Turbidity Cal Standard - 1L</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/14116</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_72af3763-dea6-4ee0-911f-7b8a5e4ed37f.jpg?v=1770042758</image:loc>
      <image:title>500 NTU Turbidity Cal Standard - 1L</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/14119</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/2000_06c347c0-1a7f-4db5-a0d2-b18eb74a8d7c.jpg?v=1770042760</image:loc>
      <image:title>Turbidity Cal Set (0.1,25,50,100,175 NTU)</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/14200</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0296/2155/1241/files/Waters_ERA_ddcdefd8-91b8-4c40-a995-ebd0ddf6127b.png?v=1770042761</image:loc>
      <image:title>Ultra Low-Level TOC Standards Kit</image:title>
      <image:caption></image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://esslabshop.com/products/14400</loc>
    <lastmod>2026-06-17T15:51:37+01:00</lastmod>
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      <image:title>Sievers Model 800 Auto Sampler Calibration Set</image:title>
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      <image:title>Custom CV Coupon - Poly</image:title>
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      <image:title>Large Polyester swabs w/snapoff head for use with HPLC</image:title>
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