2-Nitrofluorene-d9, 100µg/ml in Toluene, 1ml

Chlorpyrifos-d10 (O,O-diethyl-d10),100 µg/mL,isooctane,1mL,

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)

Melamine, 250mg