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- Macherey Nagel - Chromatography
- SPE columns, CHROMABOND HR-XCW, 85 µm, 1 mL/30 mg
State-of-the-art spherical polymer for highest demands in solid phase extraction. PS/DVB copolymer with carboxylic acid modification for mixed-mode SPE with weak cation exchange and reversed-phase properties (WCX). Exchange capacity > 0.7 meq/g, pKa ~ 5 and RP capacity 350 mg/g (caffeine in water). High-purity material with ideal flow properties and highest reproducibility. Allows highest reproducibility with extremely low blind values due to an optimized production process. Outstanding recovery rates especially for the enrichment of basic (strong bases with pKa > 10) analytes.
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   Particle type Fully porous particles (FPP) Particle shape Spherical Endcapped No Brand CHROMABOND Filter element material Polyethylene (PE) Recommended application(s) Basic compounds Carbon content Not available or proprietary pH stability 1.0–14.0 Column volume 1 mL Column shape Open tubular syringe-shaped column with Luer tip outlet Hardware Polypropylene (PP) columns with polyethylene (PE) filter elements Column type SPE column Selling unit 30 columns Scope of delivery 30x (6x5 in aluminum bags each) SPE columns, certificate of analysis Particle size 85 µm Base material PS/DVB copolymer Method Solid phase extraction (SPE) Mode Mixed mode (RP and Ion exchange (IEX)) Specific surface according to BET 850 m²/g Recommended application(s) Quaternary amines Recommended application(s) Strong bases with pKa > 10 Phase HR-XCW Surface chemistry Hydrophobic spherical polystyrene-divinylbenzene copolymer (PS/DVB) with carboxylic acid modification, weak mixed mode cation exchanger (WCX) Filling quantity 30 mg Column volume/adsorbent weight 1 mL/30 mg Recommended application(s) Basic active ingredients from strongly matrix-contaminated samples Pore size 50–60 Å 
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