S421, 10 µg/ml, Ethyl acetate, 10ml

4,4’-DDE

Sulfur Calibration Mixtures: Di-n-butyl sulfide in Heavy 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)

Inorganic Disinfection By-Products (ClO3-/ClO2-), 1000µg/ml in Water, 100ml