Dissolved Oxygen

The amount of dissolved oxygen present in water is a key indicator of water quality, and as such the need for dissolved oxygen meters is paramount in a range of industries. Dissolved oxygen meters are routinely used at the municipal wastewater treatment plant to monitor the nitrification/denitrification process. They are also used for measuring and monitoring the oxygen content at the various points in the water circuit of steam boiler installations. Another application of oxygen meters is the prevention of metal corrosion, such as in heating systems, where one of the factors affecting the rate of corrosion is the percentage of oxygen present.

Another very important application is in fish farming, where oxygen levels have to be continuously monitored both to attain optimal reproduction and to prevent high mortality caused by low oxygen. Nuclear power stations are also suitable for oxygen measurement of their heavy water.

Hanna Instruments manufacture a range of meters for use both in the laboratory and out in the field.