Sodium 4-n-octylbenzenesulfonate, 100 µg/ml, Meth

Heptachlor endo-epoxide, 100 µg/ml, Ethyl acetate

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)

Glycolic acid