2,2',3,3',4',5,6-Heptachlorobiphenyl (177) Back Catalog number: 63177 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 79375 Thiobencarb Price on request 97171 bis(2-Ethylhexyl) Adipate & Phthalate Price on request 53044 Calibration Standard Mix 2 Price on request