Metformin-HCl, 100µg/ml in Acetonitrile, 5ml

2,2',3',4,4',5-Hexachloro-3-biphenylol, 1.2ml x 50ug/ml, nonane

2,4'-DDE, 100 µg/ml, Ethyl acetate, 5ml

Diazinon, 10 µg/ml, Ethyl acetate, 10ml