Perfluoro-n-[1,2,3,4-13C4]octanoic acid, 1.2ml x 50ug/ml, methanol

Deuterated PAH Mix #2

Phorate-oxon, 100 µg/ml, Toluene, 1ml

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)