EPA Method 515.3 - Underivatized acids

Heptachlor, 1000µg/ml in Hexane, 1ml

7-Methyl-1-naphthol, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 6939-33-9

PCB No. 206, 10ug/ml in Isooctane, 10ml