Ammonia as (NH4+) Back Catalog number: 54112 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 57980 Mercury (Hg), 1µg/ml in 2%-HNO3 / Water, 3 x 20ml Price on request 5190-9767 ICH/USP Oral Target Elements Standard B 196,69 € 5190-8304 Potassium, 1000ug/ml, 100ml 25,67 €