2,4'-DDE, 10.0 µg/ml, Ethyl acetate, 10ml

2,2',3,4,4',5-Hexachlorobiphenyl (137)

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)

n-Hydrocarbon Mix C8 - C40, 1000µg/ml in in MeCl2 : CS2 [3:1], 1ml