Ciprofloxacin-HCl, 100ug/ml, 10ml in ACN

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)

D7-o-Toluic acid, 50mg

Carbon (C)