3,4,4'-Tribromobiphenyl, 1.2ml x 50ug/ml, nonane

2-Methylhippuric acid, 100mg

Phthalic acid, bis-C6-C8-branched alkyl esters C7-rich, 100mg

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)