Automatic calibration: Often troubled by a calibration problem? A simple touch button can help you calibrate the digital pH meter. Featuring a three-point calibration method with simple calibration procedures, the Dr.meter pH tester can automatically identify the calibration liquid to give you the pH reading almost in the blink of an eye . Practical reading of the pH value: Get the job done with ease. Ready to read the pH value? Just know the quality of the liquid with the one button lock reading function. It really is that simple. Automatic temperature compensation: Thanks to the automatic temperature compensation (ATC) function, the Dr.meter pH meter can resolve any inaccuracies caused by the change in temperature of the liquid, thus making the pH more accurate. High precision: Have you ever seen a digital pH meter designed with top-notch accuracy and fast response? You can do this now with the Dr.meter pH tester. Equipped with an algorithmic chip and a high-quality, high-precision electrode, the Dr.meter pH meter is the ideal choice for testing the quality of solutions. Wide application: We've covered every possible opportunity to test the pH you need! With its pocket size, the Dr.meter pH tester is ideal for daily use at home, in teaching and for testing. It is suitable for testing the pH of drinking water, swimming pool, aquarium, spa, hydroponics, food, wine and beer, and much more. p Measuring range: pH: 0.01-14.00pH Temperature: 0-50 ℃, 32-122F Resolution: pH: 0,01pH Temperature: 0.1 1 F Accuracy: pH: ± 0.01pH Temperature: 0.1 1 F Work environment: 0-50 ℃ (32-122F) pH calibration: pH: 25 ° C Three point calibration: 4.01, 6.86, 9.18 Battery: 1.5V battery (LR44) × 4 pieces Size (mm): 40 × 185 Weight: 88g Quantity: 1 piece Note: this does not include other things, the color is based on the first picture, and other pictures only show the effect Due to the differences between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement. Please allow deviation. Thank you!