2,2',3,4,4',5-Hexachlorobiphenyl (137) Back Catalog number: 66137 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 53139 EPA 1620 Standard 1 Price on request 676994 Fumagillin, 43101mg Price on request 676330 Nafcillin sodium salt monohydrate, 100mg Price on request