Ammonia as (NH4+) Back Catalog number: 54112 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 54501 Chloride (Cl-), 1000µg/mL in Water, 500ml Price on request 54105 Phosphate (PO4-3) as P, 1000µg/ml in Water, 100ml Price on request 5190-8309 Silver (Ag) standard, 1000µg/mL, in 5% HNO3, 100ml 701,40 Kč