Merit Laboratories has added laboratory accreditation through the Wisconsin Department of Natural Resources (WDNR). The laboratory accreditation includes analytical testing for PFAS in drinking water by EPA 537.1 and PFAS in aqueous and solid matrices by LC/MS.

Accredited under Wisconsin NR 149, Merit Laboratories is approved to perform environmental sample analysis in support of covered environmental programs for the combination of analyte/analyte group and technology in the aqueous and non-aqueous matrices and analyte/analyte group and method in the drinking water matrix as specified in its Scope of Accreditation.

Merit Laboratories is a leading national PFAS environmental laboratory, analyzing drinking water, soil, wastewater, groundwater, and other sample matrices, including biosolids and sludge. Analytical methods performed by Merit for PFAS include drinking water by EPA 533, EPA 537.1, and EPA 537 rev. 1.1, biosolids by ASTM D7968-17 with Isotopic Dilution, and soil, wastewater, groundwater, and surface water by ASTM D7979-19 with Isotopic Dilution and ASTM D7968-17.