Ethylene thiourea, 100 µg/ml, Acetonitrile, 1ml

2,3,4,4'-Tetrachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

Endrin, 10.0 µg/ml, Cyclohexane, 10ml

Propamocarb hydrochloride, 10.0 µg/ml, Methanol,