Tri-m-tolyl phosphate , 1.2ml x 50ug/ml, toluene

Fluchloralin, 10 µg/ml, Ethyl acetate, 10ml

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)

2,3,6,7-Tetrachloro-9H-carbazole, 1.2ml x 50ug/ml, nonane