Direct Blue 6, 1g

2,3,6,7-Tetrachlorobiphenylene, 1.2ml x 50ug/ml, nonane

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)

Disulfoton-sulfone, 10.0 µg/ml, Acetonitrile, 10