cis-Chlordane, 100 µg/ml, Ethyl acetate, 5ml

4-Methyl-1H-benzotriazole, 10mg

1,2-Dibromobenzene

2,3,4,6,9-Pentachlorodibenzofuran (or 1,4,6,7,8), 1.2ml x 50ug/ml, nonane