Ammonia as (NH4+) Back Catalog number: 54214 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9429.8-100 Chloroneb, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 2675-77-6 Price on request 30331 Isopropyl benzene, 200µg/ml in MeOH, 1ml Price on request 1858.12-K-IO 1,4,7-Trimethylindan, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 54340-87-3 Price on request