KCI Storage Solution is a liquid used for storing pH electrodes. It contains a 3M KCl solution that helps to maintain the electrode's performance and extends its lifespan by preventing the electrode from drying out. This storage solution is recommended for use with pH electrodes that are used infrequently or stored for long periods of time. To use the KCI storage solution, rinse the electrode with distilled water and gently blot it dry with a soft tissue or cloth. Immerse the electrode in the storage solution and keep it there until the next use. It is important to make sure that the storage solution covers the entire electrode tip. Before taking measurements, rinse the electrode with distilled water to remove any traces of the storage solution. This 100 ml bottle of KCI storage solution is sufficient for several uses and should be stored in a cool and dry place away from direct sunlight.