To support PFAS investigations, monitoring, and scientific studies, Merit Laboratories has expanded its list of available PFAS compounds for environmental laboratory testing. Merit now provides analytical testing for 46 PFAS compounds by LC/MS/MS with isotopic dilution.

Results were validated by the laboratory in an October 2020 Method Detection Limit (MDL) study. The MDL is defined as the minimum concentration of a substance that can be measured and reported with 99% confidence that the analyte concentration is greater than zero and is determined from analysis of a sample in a given matrix containing the analyte.

The PFAS master list includes the following compounds:

• Sodium 1H,1H,2H,2H-perfluorodocecane sulfonate (10:2 FTSA)

• 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)

• 4:2 Fluorotelomer Sulfonic Acid (4:2 FTSA)

• 6:2 Fluorotelomer Sulfonic Acid (6:2 FTSA)

• 8:2 Fluorotelomer Sulfonic Acid (8:2 FTSA)

• 9-chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS)

• 4,8-dioxa-3H-perfluoronononanoic acid (ADONA)

• N-Ethyl Perfluorooctane Sulfonamidoacetic Acid (EtFOSAA)

• 2H-Perfluoro-2-dodecenoic acid (FDUEA)

• 3-Perfluoroheptyl propanoic acid (FHpPA or 7:3 FTCA)

• 2H-Perfluoro-2-octenoic acid (FHUEA)

• Perfluorooctane Sulfonamide (FOSA)

• 2H-Perfluoro-2-dodecenoic acid (FOUEA)

• 3-Perfluropentyl propanoic acid (FPePA or 5:3 FTCA)

• 3-Perfluoropropyl propanoic acid (FPrPA or 3:3 FTCA)

• Hexafluoropropylene oxide dimer acid (HFPO-DA)

• Sodium perfluoro-1-dodecanesulfonate (LPFDoS)

• N-ethylperfluoro-1-octanesulfonamide (NEfFOSAM)

• Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)

• N-methyl perfluorooctanesulfonamidoacetic acid (N-MeFOSAA)

• N-methylperfluoro-1-octanesulfonamide (NMeFOSAM)

• Perfluorobutanoic acid (PFBA)

• Perfluorobutane sulfonic acid (PFBS)

• Perfluorobutanesulfonamide (PFBSA)

• Perfluorodecanoic acid (PFDA)

• Perfluorododecanoic acid (PFDoDA)

• Perfluorodecane Sulfonic Acid (PFDS)

• Perfluoro-4-ethylcyclohexanesulfonate (PFECHS)

• Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA)

• Perfluoroheptanoic Acid (PFHpA)

• Perfluoroheptane Sulfonic Acid (PFHpS)

• Perfluorohexanoic acid (PFHxA)

• Perfluorohexanesulfonamide (PFHxSA)

• Perfluorohexanesulfonic acid (PFHxS)

• Perfluoro-4-methoxybutanoic acid (PFMBA)

• Perfluoro-3-methoxypropanoic acid (PFMPA)

• Perfluorononanoic acid (PFNA)

• Perfluorononane Sulfonic Acid (PFNS)

• Perfluorooctanoic acid (PFOA)

• Perfluorooctane sulfonic acid (PFOS)

• Perfluoropentanoic acid (PFPeA)

• Perfluoropentane sulfonic acid (PFPeS)

• Sodium Perfluoropropanesulfonic acid (PFPrS)

• Perfluorotetradecanoic Acid (PFTeDA)

• Perfluorotridecanoic Acid (PFTrDA)

• Perfluoroundecanoic Acid (PFUnDA)

Merit 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 and soil, wastewater, groundwater, and surface water by ASTM D7979-19 with Isotopic Dilution and ASTM D7968-17.