4.4'-DDE (13C12), 100µg/ml in n-Nonane, 1,2ml

Sulfur Calibration Mixtures: Di-n-butyl sulfide in Light White Oil (less than 20mg/kg S) Unit : 10mL screw-capped bottle Light White Mineral Oil Heavy White Mineral Oil (20 cSt at 40°C) (70 cSt at 40°C)

POE (2) tallow amine, 1g

epsilon-HCH, 10µg/ml in Cyclohexane, 1ml