Accurate pH tester pH meter with a sensitive electrode sensor, featuring a 014.0 measuring range to quickly and easily read accurate pH levels. This pH tester kit offers 0.01 resolution, ensuring precise readings within 0.01 pH. Simple calibration The pH meter includes 3 pH calibration powder packets. Press and hold the calibration button (CAL), then place the meter in the pH buffer solution for several seconds to enable automatic calibration. Automatic temperature compensation Equipped with a built-in automatic temperature compensation (ATC) system, the pH meter accurately adjusts for temperature differences between the sample and standard solution. It operates effectively within a temperature range of 0C60C (32F140F). Wide application This digital pH meter is ideal for home and laboratory use. The pH pen is suitable for testing water, swimming pools, aquariums, spas, hydroponics, wine, and beer. Care instructions When not in use, always replace the cap. Prolonged exposure of the glass electrode to air may cause inaccurate readings and unstable values, affecting performance. Material: Plastic Color: As shown Package contents: 1 x pH tester Note: Light reflection and display differences may cause slight variations in color between the image and actual item. Measurement may vary by 13 cm.