Ammonia as (NH4+) Back Catalog number: 54112 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 57424 Chromium (Cr), 1µg/ml in 2%-HNO3 / Water, 100ml Price on request 5190-8428 Phosphorus, 10,000ug/ml, 100ml 99,26 € VHG-PTLN-100 Tl, 1000 µg/mL in 5% HNO3, 100ml Price on request