EPA Method 500 Series Internal Standard #5

n-Nonadecylbenzene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 29136-19-4

6-Aminobenzo[a]pyrene, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 7428-83-3

Camphechlor (Toxaphene), 10.0 µg/ml, Ethyl acetat