2,3,3',4,4',5,5',6-Octabromodiphenyl ether, 1.2ml x 50ug/ml, toluene

Nitrapyrin, 100 µg/ml, Ethyl acetate, 5ml

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)

Dichloroacetic acid