EPA Method 8250/8250A Cal Check Cmpds Acids

2,2',6,6'-Tetrachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

Benzo[k]fluoranthene-d12, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 93952-01-3

GLC Reference standard 674, 100mg