Electrode, Glass

Name:
Electrode, Glass
Detailed information:
A thin, glass membrane that when immersed in a suitable liquid medium develops a measurable electrical potential that can be readily related to the activity of ionic species present in the solution. By appropriate manipulation of the glass composition, careful pretreatment of the glass surface, and reproducible experimental conditions, electrodes can be devised that not only yield information about the concentration of ions in solution but also have the ability to discriminate in the sense of a selective response between a number of different ions of similar chemical characteristics. Because of their ability to give both qualitative and quantitative information about ions in solution, glass electrodes are widely used for purposes of chemical measurement, especially in electrochemical research.