2,3,4,6-Tetrachlorophenol

Dimethoate, 100 µg/ml, Toluene, 1ml

2,3,6,8-Tetrachlorodibenzofuran, 1.2ml x 50ug/ml, nonane

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)