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 23013 EPA Method 8260 - Purgeable Internal Standard Price on request C17594000 Toluene, certified, 5ml Price on request 676173 2-Methyl-5-nitroaniline, 250mg Price on request