Gold (Au) Back Catalog number: 56079 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2006.12-25MG 3,3',4,4'-Tetrachlorobiphenyl, neat, Solvent-neat, Unit 25mg, # of units-1, Cas.no. 32598-13-3 Price on request 94447 8270 Spike Standard Price on request 92772 Phthalate Standard, 2000µg/mL in acetone, 1ml Price on request