2,3',4,4',5',6-Hexachlorobiphenyl (168) Back Catalog number: 66168 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 30055 EPA Method 552 Internal Standard Price on request 673779 2,4-DB-methyl ester, 100 µg/ml, Ethyl acetate, 5 Price on request 59250 QC Check Sample Price on request