2,4-Diisopropylphenyl diphenyl phosphate, 1.2ml x 50ug/ml, toluene

cis-(13C10)Nonachlor, 1.2mL x 100ug/mL, nonane

Tris(2-butoxyethyl) phosphate

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)