solid-state ion-selective electrode

chemistry

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July 14, 2026

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A solid-state ion-selective electrode is a type of potentiometric indicator electrode used in chemical analysis. It is designed to preferentially respond to a single chemical species within a solution. The electrode's potential changes as the concentration or activity of this specific species varies.1

Solid-state ion-selective electrodes utilize a membrane made of a solid, sparingly soluble, ionically conducting substance. This substance can be used alone or embedded in an organic polymer. Typically, one of the ions within the solid membrane is identical to the analyte ion being measured. For example, membranes composed of silver sulfide can detect both silver ions and sulfide ions. These electrodes are a category of ion-selective electrodes, which are a type of electroanalytical method used to measure electrical parameters related to analytes in a solution.1

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chemical analysis
Ion-selective electrodes
Solid-state ion-selective electrodes use a solid sparingly soluble, ionically conducting substance, either alone or suspended in an organic polymeric material, as the membrane. One of the ions in the solid generally is identical to the analyte ion; e.g., membranes that are composed of silver sulfide…
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Solid-state ion-selective electrodes use a solid sparingly soluble, ionically conducting substance, either alone or suspended in an organic polymeric material, as the membrane. One of the ions in the solid generally is identical to the analyte ion; e.g., membranes that are composed of silver sulfide…
Read More