4.4'-DDE (13C12), 100µg/ml in n-Nonane, 1,2ml

1,4-Dimethylnaphthalene, 100 µg/ml, Cyclohexane,

alpha-Endosulfan 10 µg/mL in Cyclohexane, 10ml

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