A PH Controller is a device used to monitor and control the pH level of a solution within a desired range. It is equipped with a pH sensor or electrode that measures the acidity or alkalinity of the solution based on the concentration of hydrogen ions (H⁺) present. This often includes a dosing system or control mechanism to add acidic or alkaline reagents to the solution as needed to adjust the pH. These controllers are commonly used in various industries, including water treatment, aquaculture, agriculture, chemical processing, and pharmaceutical manufacturing. PH Controller plays a critical role in maintaining pH stability and control in various industrial processes, ensuring product quality, process efficiency, and environmental compliance.