D-Isoascorbic acid, 250mg

tau-Fluvalinate, 100 ng/µl, 1ml

Chlorotoluron-desmethyl, 100 µg/ml, Acetone, 1ml

Sulfur Calibration Mixtures: Di-n-butyl sulfide in Light 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)