epsilon-HCH, 10μg/ml in Acetonitrile, 1ml

EPA Method 502.2 Internal Standard

Benz[a]anthracene-d12, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 1718-53-2

4,4'-DDT, 10.0 µg/ml, Ethyl acetate, 10ml