Malathion, 10.0 µg/ml, Ethyl acetate, 10ml

Coumaphos, 10.0 µg/ml, Cyclohexane, 10ml

2,2',3,4,5,5'-Hexachloro[13C12]diphenyl ether, 1.2ml x 50ug/ml, nonane

Tributyl phosphate