2,4'-DDD, 100 µg/ml, Acetonitrile, 5ml

4-Nonylphenol diethoxylate, mixture of nonylisomers,100 µg/mL,isooctane,1mL,

EPA Method 508 - Performance Check Solution

Fenitrothion, 100µg/mL in Acetonitrile, 1ml