2,2',3,3',4,4',6-Heptachlorobiphenyl (171) Back Catalog number: 63171 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677555 Galactosan, 10mg Price on request H293905 Hexahydrocoumarin, 250mg Price on request X9054 4,4’-DDD Price on request