Endosulfan-sulfate, 100 µg/ml, Cyclohexane, 1ml

1,1-Bis(4-hydroxyphenyl)cyclohexane, 1.2ml x 50ug/ml, methanol

2-Chloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene

Dimethoate, 100 µg/ml, Ethyl acetate, 5ml