PCB No. 31, certified, 25mg

N-Nitroso-4-(2-hydroxyethyl)-piperazin-2-one,1000 µg/mL,acetonitrile,1mL,

2,4,4'-Tribromodiphenyl ether, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 41318-75-6

p-Sexiphenyl, 1000µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 4499-83-6