2,7-Dichloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene

17ß(H),18 alpha(H)-22-Methyl-28-nor-spergulane, neat, Solvent-neat, Unit ca. 5µg, # of units-1, Cas.no.

Coronene-d12, 1000µg/mL, Solvent-dichloromethane, Unit 1mL, # of units-5, Cas.no. 16083-32-2

Toxaphene,100 µg/mL,n-hexane,1mL,