Isoproturon, 100 µg/ml, Acetonitrile, 5ml

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)

o-Thiocresol, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 137-06-4

1,2,4,7-Tetrachloronaphthalene, 1.2mL x 50ug/mL, nonane