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 11685.12-100-IO 2,2',3,5-Tetrachlorobiphenyl,100 µg/mL,isooctane,1mL, Price on request 79076 EPA Method 8330 Analyte Price on request 12092.7-K-IO Benzal chloride,1000 µg/mL,isooctane,1mL, Price on request