referenselektroden
Referenselektroden, or reference electrode, is an electrode with a stable and well-defined electrochemical potential used as a reference against which the potential of the working electrode is measured. Ideally, it carries little or no current. Its potential is set by a redox couple or hydrolysis in an electrolyte and should remain stable under the measurement conditions.
Common types include the saturated calomel electrode (SCE), which uses mercurous chloride in saturated potassium chloride
Key specifications are the potential stability and drift, junction potential with the test solution, chemical compatibility
Reference electrodes are used in electroplating, corrosion testing, and analytical electrochemistry. The choice depends on solvent,