Dibenzo(a,i)pyrene

Trichloroethene, 1000 ng/µl, 1ml

Mono-n-butyl phthalate (ring-1,2-13C2, dicarboxyl-13C2, 99%) 100 µg/mL in MTBE, 1,2ml

3,3´-Dimethoxybenzidine, certified, 0.1g