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 50117 ICP-MS Mix #1 Price on request 675775 Mirex, 100 µg/ml, Ethyl acetate, 5ml Price on request 681199 4-Chlorobenzoic acid, 250mg Price on request