EPA Method 500 Series Internal Std #4

Chlorotoluron-desmethyl, 10 µg/ml, Acetone, 10ml

Arochlor 1232, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-5, Cas.no. 11141-16-5

Octachlorostyrene, 100µg/mL in Cyclohexane, 1ml