Ammonium as N Back Catalog number: 50792 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3205.16-K-IO 9-trans-Hexadecenoic acid, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 10030-73-6 Price on request 19042 EPA Method 508 Surrogate Standard Price on request 676757 2-Naphthylamine, 100mg Price on request