Display Design- This PH meter is designed to display information in an intuitive layout. You can still read the numbers even in low visibility. Handheld pocket design, easy to carry. 5 minutes automatic shutdown design to save power and ensure battery life. High Precision pH Tester- The glass probe of this pH tester is made of low resistance glass sensitive film with fast response. The pH meter adopts a three-point calibration method to ensure the accuracy of the measurement. Automatic Temperature Compensation and Calibration- Liquid temperature may affect the reading level, but our digital pH water tester can accurately measure the pH of samples in the temperature range of 0C-60C or 32-140F, And the pH tester can automatically identify the calibration solution to quickly read the numbers. WIDE APPLICATIONS- This pH tester is ideal for home and laboratory pH testing applications, it can be used to test drinking water, swimming pools, aquariums, spas, aquaculture, ponds, and well water indoors or during vacations to ensure daily Water safety in life