EPA Method 8240A - Ketones

3,3',4,4',5-Pentachlorobiphenyl, 100 µg/mL, Solvent-dimethylsulfoxide, Unit 1mL, # of units-1, Cas.no. 57465-28-8

Benzo(e)pyrene,2000µg/ml in methylene chloride,1ml

2-Nitropyrene, 200ug/mL in Toluene, 1ml