EPA Method 515.1 Internal Standard

n-Tetracontane, ?13C: -27.05, 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 4181-95-7

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

2,2',3,3',4,4',5,6'-Octachlorobiphenyl (196)