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

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

2-Nitrodiphenylamine

Prosulfocarb, 10.0 µg/ml, Acetonitrile, 10ml