Oxygen Sensors for Lab and Field
Dissolved oxygen is present in virtually every liquid. Liquid dissolves oxygen until the partial pressure of oxygen in the liquid is in equilibrium with the air or gas in which it is in contact. The actual concentration of dissolved oxygen depends on a number of factors, such as temperature, air pressure, oxygen consumption by microorganisms in a biodegradation process or oxygen production by algae. The oxygen concentration is important e.g. for the living conditions in waters or the degradation processes in wastewater treatment.
The determination of the oxygen concentration was formerly carried out by the Winkler titration method. Today, electrochemical and optical measurements are recognized methods in numerous standard procedures.
Our Oxygen Sensors: