Benz[a]anthracene, 10.0 µg/ml, Cyclohexane, 10ml

Benzo(g,h,i)perylene, 10µg/ml in Acetonitrile, 10ml

1,2,3-Trimethylbenzene, 100 µg/ml, Methanol, 1ml

3,3'-Dimethylbenzidine, 100mg