1,3-Diphenylguanidine, >98%, 25g

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)

2,3,5,6-Tetrachloroaniline, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 3481-20-7

Prometon, 100µg/ml in Acetonitrile, 1ml