What you are viewing is a waterproof design LCD handheld pen style water PH meter. If you care about the water quality, a best PH meter is a must-have item for you.A water PH meter is an electronic device that measures PH by detecting the PH value in the water. The pH of a water-based solution reflects the solution's acidity or basicity. This pen PH meter adopta new technology, which makes the measurement accuracy of the water PH meter increased significantly. Also, the company introduces advanced technology and imported components to greatly reduced volume, reduce the cost and keep the original fine quality. The accuracy of the water PH meter is ±0.3pH and offers more accurate test result for you. Especially measuring liquid and the space temperature difference is more outstanding. This water PH meter is ideal for all pH testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment, wine, coffee, agriculture and so on.The pen style is unique and easy to use, and you can put it into your pocket or handbag and carry it anywhere you want to go. Waterproof housing, you don't worry about it will be wet and damaged. Also this PH meter can change electrode. This water best PH meter is a great choice. What are you waiting for? Come on, take it home!