O,O-Diethylthiophosphate-13C2, sodium salt

Methanol QC Reference Mixture III n-Butyl sulfide, 0.5 ppm (weight S by weight) in 99.9 % methanol; units: 10x10mL

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

Potassium Nitrate