2,2',3,3',4,4',6-Heptachlorobiphenyl (171) Back Catalog number: 66171 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 680919 Estriol, 10 µg/ml, Acetonitrile, 10ml Price on request 91435 Detector Performance Standard Price on request 50697 ICP Mix Precious Metals Price on request