3,3',5,5'-Tetrabromobisphenol A bispropionate,50 µg/mL,toluene,1mL Certan,

4-Ethylphenol-d4-PFB, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 100-58-8

Glyphosate-1,2-13C2 15N, 100µg/ml in Water, 1ml

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)