2,2',3,3',4,4',6-Heptachlorobiphenyl (171) Back Catalog number: 63171 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 43005 Aniline-d5 Price on request 59612 IC Anions Cal Std - COA Level 4 Price on request 95330 Fluorene-d10 Price on request