Ammonia as (NH4+) Back Catalog number: 54112 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 54102 Fluoride (F-) Price on request 5191-4557 ICH/USP 232 Parenteral Combined 1_v2 290,73 € 218,05 € 5190-9767 ICH/USP Oral Target Elements Standard B 197,51 € 148,13 €