Remove the protective cap. Clean the electrode with water (there appear white crystalline salt around the electrode. It is a normal phenomenon of the pH electrode. As long as the electrode is cleansed with water, it will dissolve and disappear). Turn on the switch. Insert the pH meter into the liquid (which one you want to measure the pH level for), allow the solution to be soak slightly above the immersion line. Gently stir until the displayed value is stable, and then read the displayed pH value.
