PCB Congeners & Hexachlorobenzene Mix #2

1-(Heptafluorobutyryl)imidazole, 1ml

1-Chlorodibenzo-p-dioxin, 1.2ml x 50ug/ml, nonane

1-n-Pentyl-2-phenylbenzimidazole, neat, Solvent-neat, Unit 10MG, # of units-31, Cas.no. 305347-17-5