EPA Method 525 Spike B

2,2',4,5,5'-Pentachloro-4'-methoxybiphenyl, 1.2ml x 50ug/ml, nonane

D10-Chlorpyrifos, 100 µg/ml, Acetonitrile, 5ml

Perylene-d12, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 1520-96-3