One 2 mL flame-sealed ampule with 1.5 mL of PFAS standard containing 44 analytes at 25-625 ng/mL. The standard is suitable for matrices to include, but not limited to, wastewater and solids and compatible with methods EPA 1633 and 1633A, EPA 8327, ASTM D8421-21, ASTM D7979 and other comparable methods. Branch configuration is linear for all analytes except for PFHxS, PFOS, NMeFOSAA, NEtFOSAA. These four analytes are made from sources which include both linear and branched isomers. The Certified Values presented on the Certificate of Analysis for these compounds is the total isomer concentration.
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