Chlorpyrifos, 100 µg/ml, Acetonitrile, 5ml

Trimethyl phosphate, 100 µg/ml, Methanol, 5ml

Naltrexone hydrochloride, 1000µg base/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 16676-29-2

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)