One flame-sealed ampule containing 10 g of soil. The standard is certified for 40 analytes and will be spiked with a subset of a minimum of 24 analytes at 5-50 ug/kg. The sample is designed for LC/MS/MS methods for analyzing soil, specifically EPA Method 1633 and 1633A, EPA Method 8327 and DoD/DoE QSM Table B-15. PFOS, PFHxS, NEtFOSAA and NMeFOSAA are made using standards which include both branched and linear isomers. The assigned value presented on the Certificate of Analysis for these compounds is the total isomer concentration. This product is a replacement for PFAS in Soil: 462 (PT), 604 (CRM) and 604QR (QR).