Initial Check Verif. Standard 4, in 4%HNO3, 100ml

5-Nitro-o-toluidine, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 99-55-8

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)

Whole Oil Light Hydrocarbons C5-C8 by GC Hydrocarbons C5-C8, Neat 1mL, 28 components Relative ratio Chiron No. Name C