What is an ISE – Ion Selective electrode?

An ion-selective electrode (ISE) is an electrode that measures the activity of a specific ion dissolved in a solution into an electrical potential which can be read on a meter. The sensing part of the electrode is usually made of an ion-specific membrane, along with a reference electrode. Ion-selective electrodes are used in a wide range of applications as a simple and low cost method of analysing a range of species

They can be connected to a conventional pH meter or a more advanced ion meter.

They are supplied as either a combination ISE electrode containing the Ion sensing element and a reference electrode; or as a Half cell or mono ISE where they require a separate reference electrode.

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