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 59206 Mixed Common Anions Price on request 678984 Atrazine-2-hydroxy, 100 µg/ml, Methanol, 1ml Price on request 70291 1,1,1-Trichloroethane Price on request