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

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

2-Dodecanone, 1ml

D6-Isoproturon, 100 µg/ml, Acetone, 1ml