Phosalone, 100 µg/ml, Toluene, 1ml

Ipronidazole, 100 µg/ml, Methanol, 5ml

(±)-trans-11-Nor-9-carboxy-delta-9-THC, 1000µg/ml in MeOH, 1ml

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)