Mass-Labelled HCH Solution/Mixture, 2µg/ml in Nonane, 1,2ml

Dicofol

QC Standard 1

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)