Napropamide, 100µg/ml in Acetonitrile, 5ml

3,4,4',5-Tetrachlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 70362-50-4

PCB No. 170, 100µg/ml in Cyclohexane, 5ml

3,3'-Dimethoxybenzidine, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 119-90-4