1,2,3,4,6,7-Hexachloronaphthalene,,,,

Heptachlor, 100µg/mL, Solvent-dichloromethane, Unit 1mL, # of units-1, Cas.no. 76-44-8

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)

1,2,3,5-Tetramethylbenzene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 527-53-7