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

PCB No. 77, 10µg/ml in Isooctane, 10ml

Diheptyl phthalate (mixture of isomers), 1000mg

4,4'-Diaminobiphenyl,1000 µg/mL,acetonitrile,1mL,