Monograph: Electrodes in potentiometry

Potentiometry is an analytical method that allows for rapid and simple analyses by measuring the potential difference between an indicator electrode and a reference electrode. This monograph serves as a practical guide about the different electrodes used in potentiometry, such as titrations or ion-selective measurements. The first part explains the theory behind potentiometry. The second part presents different types of electrodes and provides practical tips for electrode handling.

Key take-aways:

• Basics of potentiometry: Learn about the setup of a potentiometric measurement system and the Nernst equation, which provides the theoretical background for potentiometric measurements.
• Ion-selective electrodes: Learn about the various ion-sensitive electrodes (ISEs) used in potentiometry, and the different membrane types (glass membranes, crystal membranes, or polymer membranes) used to measure various ions.
• The pH-electrode is the most common ion-selective electrode. Learn about the working principle of a pH electrode and practical tips for calibration, troubleshooting, and maintenance.
• Metal electrodes are used for redox measurements and precipitation titrations with silver. Get tips on how to store and clean these kinds of electrodes.
• Reference electrodes: Learn about the important points to consider when selecting a reference electrode, like the diaphragm or double junction electrodes.

For more comprehensive and practical knowledge of potentiometry, download the monograph.