Metronidazole, 100 µg/ml, Acetonitrile, 1ml

Aqueous ethanol control EtOH AQ (0.1g/L), 10 x 3.0ml

Fentanyl-D5

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)