EPA Method 548.1 Internal Standard

Ethyl docosanoate, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 5908-87-2

6-Methylchrysene, 100 µg/ml, Acetonitrile, 5ml

2-Methyloctane, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 3221-61-2