Brand new, high-quality pH and chlorine water tester. This device is useful for professional aquarium enthusiasts and water purification tasks. Checking the chlorine level of water in your backyard pool is effortless. The device is very easy to use and allows for accurate and clear measurements of water pH and chlorine levels. It does not require an external power supply, only a 1.5V AA battery, making it extremely portable and safe to use in contact with water. With this tester, you can check the pH level and chlorine content of water. The tester has high measurement accuracy, and the results are displayed on a clear arrow screen. You can instantly verify if the water is perfect for swimming and whether the use of pool chemicals is necessary. The scale indicates what adjustments are needed for the water. Operating the tester is incredibly simple: just immerse the electrode in the water, and the test result appears immediately. Using this tester is significantly more economical and pays for itself quickly compared to disposable chemical testers. Packaging: Blister. Power supply: 1x 1.5V AA battery.