Propham, 10 µg/ml, Ethyl acetate, 10ml

Resmethrin, 1000µg/ml in MeOH, 1ml

epsilon-HCH, 10 ng/µl, 1ml

2,2',3,3',4,5,5'-Heptachloro-4'-methoxy[13C12]biphenyl, 1.2ml x 50ug/ml, toluene