CALCULATORS
Calculate the free ammonia of your water
Only part of the total ammonium is present as free ammonia (NH₃), the form that is toxic to fish. That fraction grows sharply as pH and temperature rise. This calculator obtains it from measured ammonium, pH and temperature.
Indicative result. For a diagnosis of your installation, measure continuously or contact us.
SEE OTHER CALCULATED PARAMETERS
How it is calculated
- Free ammonia (NH₃): NH₃ = NH₄⁺ · 17/18 / (1 + 10^(pKa − pH)); pKa = 0.09018 + 2729.92/(T + 273.15). Free ammonia is the form that is toxic to fish.
Measure these data continuously
With our IoT probes, sensors and equipment you have the data in real time on any device, and the panel calculates this value on its own and warns you before problems appear.
- Modbus Transmitter (BQC-TRANSMITTER)
- pH probe (BQS-PH)
- Amonium-N Probe (BQS-NH4)
- Organic load monitoring panel (BQK-MATORG)
- Sonda de amonio de ion selectivo (ISE) (BQS-8004)
- Basic Unmanned Surface Vehicle (USV) / Water Drone (BQW-01)
- Medidor de bolsillo de humedad relativa, pH y temperatura con maletín (BQA-690)
- Sobremesa pH/mV/temperatura con agitador (BQB-1B)
- Tester de pH / redox con compensación de temperatura, solución de calibración y maletín (BQA-711)
- Tester de pH / redox / CE / TDS / SAL con compensación de temperatura, solución de calibración y maletín (BQA-720)
- Tester de conductividad / TDS / SAL con compensación de temperatura, solución de calibración y maletín (BQA-721)
- Tester de oxígeno con compensación de temperatura, solución de calibración y maletín (BQA-731)
Applications whose panel (dashboard) calculates it continuously: Drinking water (panel · ROI) · Smart cities (panel · ROI) · Industrial effluents (panel · ROI) · Naval sector: ships and submarines (panel · ROI) · Defence and military applications (panel · ROI) · Surface water (rivers and lakes) (panel · ROI) · Ecological surveillance of rivers and river basins (panel · ROI) · Groundwater and aquifers (panel · ROI)
