Interference Standard 4

4-n-Nonylphenol-2,3,5,6-d4-OD, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 358730-95-7

Perfluorooctanoic acid, 100µg/mL in Acetonitrile, 1ml

EPA Method 8325 Surrogate Standard