Atraton, 100µg/ml in Acetonitrile, 5ml

2,3',4',5-Tetrachlorobiphenyl ,100 µg/mL,isooctane,1mL,

Desmedipham, 100 µg/ml, Acetonitrile, 5ml

2,3,5,6-Tetrachlorophenol, 100 µg/ml, Methanol,