Dissolved oxygen probe BO23

laboratoryrugged

Description - Dissolved oxygen probe - Membrane-covered polarographic Clark probe - PVC body more rugged in use - Varied use: in the laboratory, in the field or in industry Dissolved oxygen probes comprise two precious-metal electrodes separated by an electrolyte. Thus, the BO23 probe has a platinum cathode soldered in glass and a silver anode. These two electrodes are immersed in a saline electrolytic solution (surfactant KCl). The probe is equipped with a membrane (PTFE film) which is permeable to oxygen.This membrane separates the electrodes and the saline electrolyte from the measurement environment. The oxygen diffuses through the membrane until it reaches the electrolyte where it is measured in dissolved form. The quantity of oxygen is proportional to the solution partial pressure. The measurement itself is performed by applying a potential between the two electrodes.