Ammonia as (NH4+) Back Catalog number: 54112 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 5190-8304 Potassium, 1000ug/ml, 100ml 24,81 € 5190-8260 Arsenic, 1000ug/ml, 100ml 28,94 € 5190-9413 PE ICP-OES Calib Std, in HNO3, 500ml 362,36 €