EPA Method 515.1 Internal Standard

1,4-Dimethylphenanthrene, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 22349-59-3

Fenvalerate, 100 µg/ml, Acetonitrile, 5ml

Endosulfan (alpha + beta), 10µg/mL in IO, 10ml