PCB No. 2, 100µg/ml in Isooctane, 1ml

Isofenphos, 100 µg/ml, Acetonitrile, 1ml

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

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