2,3,3',4'-Tetrachlorobiphenyl (56) Back Catalog number: 63056 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-LCS-A40 Mass-Labelled PCDD/PCDF Solution/Mixture , 1.2ml , nonane Price on request 38500 WS Dichlorodifluoromethane Price on request 11302.15-K-ME Phenytoin,1000 µg/mL,MeOH,1mL, Price on request