The HM Digital PH-80 pH Hydrotester is a professional water testing tool that is designed to measure pH levels quickly and accurately. This handheld pH testing device is easy to use and maintain, and can be used in a variety of applications, including ponds, aquariums, and hydroponic systems. With the PH-80, you can measure pH levels in seconds, allowing you to keep your water in optimal condition. This device has a large, easy-to-read LCD display that shows the pH level, temperature, and calibration status. It also has a simple two-button operation, making it easy to use for anyone. The PH-80 also comes with a protective cap for the probe, ensuring that the device is well protected when not in use.