(13C12)Dieldrin, 1.2mL x 100ug/mL, nonane

PCB No. 77, 100µg/ml in Isooctane, 1ml

4-OH-Pyriproxyfen (4'-OH-pyr), 100 µg/ml, Acetoni

Methidathion, 1000µg/ml in MeOH, 1ml