Mass-Labelled PCB Extraction Standards, 1.2ml, nonane

2,3,7,8-Tetrachlorodibenzo-p-dioxin ,50 µg/mL,n-nonane,1mL,

Pyruvic aldehyde, 40% solution in water, neat, Solvent-neat, Unit 10mL, # of units-1, Cas.no. 78-98-8

2-Mercapto-4,5,6,7-d4-benzimidazole, 5mg