2,8-Dichloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene

1-Chloro-4-fluorobenzene, Internal standard for Gasoline Range Analysis, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 352-33-0

Mass-Labelled PCDD/PCDF Internal Standard Solution, 1.2ml, nonane

Cyclooctane