Chlorpyriphos-ethyl, 100µg/ml in Acetonitrile, 5ml

Hexachlorophene

1-Hydroxyibuprofen, 100 µg/ml, Acetonitrile, 1ml

EPA 528 rev. 1.0 Internal Standard Solution 2 200µg/mL in dichloromethane; unit: 1x5mL 2081.6 2,3,4,5-Tetrachlorophenol [4901-51-3]