After filling the cells with the solution (NaOH and NaCl), the user must perform a leakage test.   Control the level of liquids inside each container. If the level of the liquids is not constant within ten minutes, or if any dripping is observed below the cell, there may be a leak between the gasket and the specimen surface or between the test cell and connectors. Any leakage problem should be fixed before starting the test.   If the leakage is between the gasket and the specimen surface, try tightening the bolts and refilling the cell containers. If the source of the leakage is between the cell and connectors, try tightening the connector, if it is possible. Otherwise, use silicon glue to seal the space between the connector and the cell. You may also need to adjust the position of the rubber gaskets and ensure they are properly located within the Plexiglas cell part to fix the leakage problem.