2,3',6-Trichlorobiphenyl ,100 µg/mL,isooctane,1mL,

N-(4-chloro[13C6]phenyl)-N'-(3,4-dichloro[13C6]phenyl)[13C]urea , 1.2ml x 50ug/ml, methanol

Benzo[a]pyrene,400µg/mL,cyclohexane,0.5mL,

N-Nitrosomethylethylamine, 2000µg/mL, Solvent-dichloromethane, Unit 1mL, # of units-1, Cas.no. 10595-95-6