1-Chloro-1,1-difluoroethane, 1000µg/ml in MeOH, 1ml

Pesticide Mix (Acetochlor, Metazachlor, Alachlor, Terbuthylazine, Terbuthylazine-desethyl), 10µg/ml in Hex/1% AC, 1ml

Pendimethalin, 10 µg/ml, Acetonitrile, 10ml

EPA Method 500 Internal Standard #6