EPA Method 1664 - Oil & Grease (Sonicate)

Heptachlor, 100 µg/ml, Acetonitrile, 1ml

1-Methyl-5-nitronaphthalene, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 91137-27-8

trans-Nonachlor, 10 µg/ml, Cyclohexane, 10ml