2,2',3,3',4,5,6'-Heptachlorobiphenyl (174) Back Catalog number: 63174 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 50794 Total Kjeldahl Nitrogen as N Price on request 1526.24-10MG Coronene-d12,neat,neat,10mg, Price on request 90665 Isobutanol Price on request