Accurate pH tester pH meter with a sensitive electrode sensor, featuring a 014.0 measuring range to quickly and easily read pH levels. This accurate pH tester kit offers 0.01 resolution, providing precise readings within 0.01 pH. Simple calibration The pH meter includes 3 pH calibration powder packets. Press the calibration button (CAL) and place the water pH tester in the pH buffer solution for several seconds; the device will automatically calibrate. Automatic temperature compensation When the sample solution temperature differs from the standard solution, the built-in automatic temperature compensation system (ATC) ensures accurate pH measurement across temperatures from 0C to 60C (32F to 140F). Wide application Digital pH meter is ideal for home and laboratory use. The pH pen measures pH and is suitable for various applications including water, swimming pools, aquariums, spas, hydroponics, wine, and beer testing. Attention When not in use, always replace the cap. Exposure of the glass electrode to air may cause inaccurate readings and unstable values, affecting the performance of the pH meter. Material: Plastic Color: As shown Package Contents: 1 x pH tester Only the above items are included; other products are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement error allowance is 13 cm.