Ammonia as N Back Catalog number: 54213 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11727.12-100-IO 2,3',4,5,5'-Pentachlorobiphenyl,100 µg/mL,isooctane,1mL, Price on request 1407.8-1G 2,5-Dimethylphenol, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 95-87-4 Price on request 63047 2,2’,4,4’-Tetrachlorobiphenyl Price on request