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 683862 Pizotifen, 10mg Price on request 79160 N-Nitrosodiphenylamine Price on request 52134 Lanthanides - Multi-Element Solution 2 Price on request