2,2',3,4',5,6,6'-Heptachlorobiphenyl (188) Back Catalog number: 66188 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 72355 Sulfometuron methyl Price on request 55159 CWA Uranium PT Price on request 90450 4-Ethyltoluene Price on request