2,3,3',4,4',5,5'-Heptachlorobiphenyl (189) Back Catalog number: 66189 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 90126R Aroclor 1242 Price on request 50138 AA Mix #1 Price on request 677839 4-Androstene-3,17-dione, 100mg Price on request