Ammonia as N Back Catalog number: 59239 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0212.18-K-T Chrysene, 1000µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 218-01-9 Price on request 1136.16-10MG n-Hexadecane, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 544-76-3 Price on request 676706 PSA-GCB-Mix for 2007.01 per AOAC Price on request