2,2’,3,3’,4,4’,5,5’-Octachlorobiphenyl (194) Back Catalog number: 66194 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 63188 2,2',3,4',5,6,6'-Heptachlorobiphenyl (188) Price on request 50212 Total Phosphorus (P) Price on request 672826 Chlorpropham, 250mg Price on request