2,3,3',4'-Tetrachlorobiphenyl (56) Back Catalog number: 63056 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11908.20-100MG Fluorescein (free acid),neat,neat,100mg, Price on request 71112 Swep Price on request 684563 Chlorpyrifos-methyl-desmethyl TMA salt, 100 µg/ml, Price on request