Ammonia as (NH4+) Back Catalog number: 54112 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 54150 Complex Cyanide (CN-), 1000µg/ml in Tr. NaOH / Water, 100ml Price on request 5190-8298 Nickel, 1000ug/ml, 100ml 25,07 € 5191-4570 ICP-MS Internal Std Mix (100mL) 250,45 €