2,3,3',4,4',5'-Hexachlorobiphenyl (157) Back Catalog number: 68157 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 97172 Semi-Volatile Standard Price on request 70376 Strychnine Price on request 11094.10-10MG 2-Pentylpyridine,neat,neat,10mg Price on request