Dibenz[a,j]anthracene, 10µg/mL in Acetonitrile, 10ml

N-(4-chlorophenyl)-N'-(3,4-dichlorophenyl)urea , 1.2ml x 50ug/ml, methanol

6-Nitrochrysene-d11, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-10, Cas.no. 203805-92-9

1,3,5-Triazine-2,4,6-triamine (Melamine), 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 108-78-1