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 50125 pH 1.0 Standard @ 25°C Price on request 675176 2,3,5-Trimethylphenol, 250mg Price on request 98325 High Conc Chlorinated Phenols Standard Price on request