EPA Method 548.1 Internal Standard

Heptenophos, 10.0 µg/ml, Cyclohexane, 10ml

Chloridazon-desphenyl, 10.0 µg/ml, Acetonitrile,

Propanil, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 709-98-8