13C LABELED PCB MIXTURE PCBS-77/101/141/178 10UG/ML IN NONANE

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

Perfluorooctane sulfonic acid, 100µg/ml in MeOH, 1ml

2-Perfluorobutyl-[1,1,2,2-2H4]-ethanol (4:2), 50µg/ml in MeOH, 1,2ml