Atrazine-desethyl-desisopropyl, 100µg/ml, Acetonitril, 1ml

Isopropylbenzene, 1000µg/ml in Cyclohexane, 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)

Phenthoate, 100 µg/ml, Methanol, 1ml