Mirex, 100 µg/ml, Ethyl acetate, 5ml

Tetrachloromethane, 100 ng/µl, 1ml

2,3,4,5,6-Pentachlorophenol-13C6, 1000µg/ml in Isopropanol, 1ml

Heptachlor epoxide (isomer B), 1000µg/ml in MeOH, 1ml