Aroclor 1221 Back Catalog number: 79403 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8912.14-100-T 4-Methyl-2,2',5,5'-tetrachlorodiphenylmethane Price on request 66207 2,2',3,3',4,4',5,6,6'-Nonachlorobiphenyl Price on request 90397 Surrogate Standard Price on request