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 71713 Citric acid Price on request 60248 Aroclor 1248 in Transformer Oil Price on request 70016R Aroclor 1221 Price on request