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 59502 Multi-Element Internal Standard Price on request 674932 Metoxuron, 100mg Price on request 675533 Bisphenol TMC, 25mg Price on request