Isofenphos, 10.0 µg/ml, Ethyl acetate, 10ml

Edifenphos, 100 µg/ml, Acetonitrile, 1ml

EPA Method 552 Surrogate Standard Methyl Ester

1,1,1-Trichloro-2,2-bis[4-chloro(13C6)phenyl]ethane, 1.2mL x 100ug/mL, nonane