O,O-Dimethylthiophosphate, sodium salt, 1000µg/ml in MeOH, 1ml

Hexachlorobenzene

N-Nitroso-N-methylurea, 500µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 684-93-5

PCB Congener Mix #3