Ammonium (NH4+) Back Catalog number: 50184 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9009.4-2K-DC N-Nitrosopyrrolidine, 2000µg/mL, Solvent-dichloromethane, Unit 1mL, # of units-1, Cas.no. 930-55-2 Price on request 3005.10-K-IO 2,3-Dimethyloctane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 7146-60-3 Price on request 96796 Phthalate Standard Price on request