2,3,3’,4,4’,5’-Hexachlorobiphenyl (157) Back Catalog number: 66157 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 30102 EPA Method 551.1 Surrogate Standard Price on request 96078 Difenzoquat Price on request 674658 D4-1,4-Dichlorobenzene, 2000 µg/ml, Methanol, 1m Price on request