epsilon-HCH, 10μg/ml in Acetonitrile, 1ml

Formaldehyde-DNPH

2,2',5-Tribromobiphenyl, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 59080-34-1

2,3,4,6-Tetrachlorobiphenyl ,100 µg/mL,isooctane,1mL,