Ammonium Measurement (NH4/NH4-N)

NH4 722 Z Ammonium Probe

Ion selective electrode for ammonium with exchangeable membrane head.

Advantages

  • Short response time
  • Minimum maintenance
  • Exchange heads preassembled
  • No reagents required
  • Robust design
  • Environmentally stable
  • Easy to install

Method

For ion-selective measurements an ion-selective membrane separates the sample solution from the electrode. Ammonium ions can pass through the membrane while other ions are excluded. The electrical voltage between this ammonium electrode and a reference electrode in solution is measured, allowing a continuous measurement with short response time.

Applications

  • Process water (paper industry, refineries, pharmaceutical industry)
  • Municipal waste water
  • Landfill water
  • River water

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AMMONO-LAB / AMMONO-PRO / AMMONO-FIX

The AMMONO series features online analysers for the continuous monitoring of the ammonium concentration between 0.1 and 200 mg/l NH4-N or NH4.

Thanks to gas sensitive measurement technology, AMMONO is not affected by interference ions. The advantages of the analyser include automatic calibration at regular intervals and the integrated sample pump, which makes an external feeding pump unnecessary in most cases.

Available in three different housings: Standing with castors as AMMONO-LAB, wall-mounted as AMMONO-PRO or as AMMONO-FIX in a heated stainless steel cabinet for outdoor installation at the site of measurement.

Advantages

  • Minimal maintenance
  • Easy handling
  • Highly reliable
  • Low operating costs
  • Robust design
  • No sample preparation

Method

The measuring principle is based on the gas sensitive measurement by means of an ammonia electrode. The ammonium present in the sample (NH4) is converted into ammonia (NH3) at increased pH values. This easy, reliable and exact measuring principle is not affected by solids in the sample.

Thanks to large pipe and tube diameters no filtration is required, saving money and time-consuming maintenance.

Applications

  • Process water (paper industry, refineries, pharmaceutical industry)
  • Municipal waste water
  • Landfill water
  • River water