Mono(3-carboxypropyl)phthalate-13C2, 1,2ml

delta-HCH, 100 µg/ml, Ethyl acetate, 5ml

1,2,3,5,7,8-Hexachloronaphthalene,,,,

1H,1H,2H,2H-Perfluorohexanesulfonic acid, 10mg