PH Tester Kit for Drinking Water High Accuracy Digital PH Tester Pen Measure Water PH with 4pcs Buffer Solution Powder

Feature: 1. AUTOMATIC CALIBRATION: With the convenient automatic calibration button, this water pH tester can easily and accurately recognize the calibration solution for water testing. 2. HIGH SENSITIVITY GLASS PROBE: It allows for quick and easy readings of pH levels ranging from 0 to 14.0. The tester ensures accurate measurements within a range of + 0.01 pH, providing confidence in your results. 3. ONE KEY LOCK FUNCTION: Its design helps to freeze and lock the pH readings, even when the tester is removed from the sample. This feature is especially useful for recording or analyzing data. 4. PORTABLE AND CONVENIENT: It boasts a lightweight and portable size, allowing you to carry it effortlessly in your pocket and take measurements anywhe