2,3,3',4,4',5'-Hexachlorobiphenyl (157)

Chlorotoluron, 100µg/ml in Acetonitrile, 1ml

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)

Perdeuterated Internal Standard-All-in-one 16EPA in Deuterated Benzene