Aroclor 1221 Back Catalog number: X9160 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1991.12-5MG 3,3',4,4'-Tetrabromodiphenyl ether, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 93703-48-1 Price on request 672829 Thifensulfuron-methyl, 100mg Price on request 681733 MCPA-glucoside, 10mg Price on request