3-Chloro-1,2-propanediol-d5, 100µg/ml in MeOH, 5ml

Disulfoton sulfone

Tetrabromo[13C6]phthalic anhydride, 1.2ml x 50ug/ml, toluene

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)