Desmedipham, 100μg/ml in MeOH, 5ml

Chlorinated Pesticides & PCB,10ug/ml in IO:TO, 1ml

2,3,5,6-Tetrachlorophenol, 1000µg/ml in MeChl, 1ml

Azobenzene, 100 µg/ml, Cyclohexane, 1ml