25-Hydroxy Vitamin D2-d6, 1mg

7H-Perfluoroheptanoic acid, 50µg/ml in MeOH, 5ml

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)

Fenamidone, 100 µg/ml, Acetonitrile, 1ml