PCB Congeners & Hexachlorobenzene Mix #1 Back Catalog number: 95450 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1930.8-1ML Heptafluorobutyric anhydride, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 336-59-4 Price on request N-12411-1G Methyl acetate, 1g Price on request 1232.6-K-ME n-Hexane, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 110-54-3 Price on request