Semi-Volatile Standard

2,2’,3,3’,4,4’,5,6-Octachlorobiphenyl (195)

Fenthion-sulfoxide, 100 µg/ml, Acetonitrile, 5ml

Sodium 1H,1H,2H,2H-perfluoro-1-[1,2-13C2]-octane sulfonate (6:2), 50µg/ml in MeOH, 1,2ml