Ammonium as N Back Catalog number: 50791 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 94786 Additional Analytes Mix Price on request 1958.12-2K-AN Decafluorobiphenyl, 2000µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 434-90-2 Price on request 96032 Internal Standard - Surrogate Mix Price on request