An ISE conditioning solution (for ion-selective electrodes) is used to prepare and maintain the electrode in optimal condition before its use in analytical measurements. It ensures that the electrode provides accurate and stable results. The main purposes of a conditioning solution are:

1. Activate the electrode membrane: In many cases, the ISE membrane needs to be in contact with a specific solution prior to use in order to stabilize the ion-sensitive material and ensure proper response.

2. Restore sensitivity: Over time, ISEs may lose sensitivity due to prolonged exposure to samples or improper storage. The conditioning solution helps restore the electrode’s ability to efficiently detect ions.

3. Ensure a fast and stable response: Proper conditioning prepares the electrode to react quickly and provide consistent readings during measurements.