2,2',3,4',5,6,6'-Heptachlorobiphenyl (188) Back Catalog number: 63188 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 71573 2,3,5-Trichlorophenol-PFB derivative Price on request 678242 Simazine-2-hydroxy, 25mg Price on request 93459 MA - EPH n-Hydrocarbon Standard Price on request