Measuring range: 0.00-14.00 pH Resolution: 0.01 pH Accuracy: 0.01 pH Batteries: 2X 1.5V LR44 (included) WELLON pH Test Meter may include auto calibration functionality, allowing for quick and hassle-free calibration to ensure accurate measurements. This feature simplifies the calibration process and enhances the overall user experience. ๐ฆ๐๐ถ๐บ๐บ๐ถ๐ป๐ด ๐ฝ๐ผ๐ผ๐น ๐๐ฎ๐๐ฒ๐ฟ: The PH value of normal swimming pool water quality is between 6.8 and 8.2. The PH meter could help us detect the water quality of the swimming pool at any time to ensure the safety of the water quality and let our family swim in the water with confidence. ๐๐ฒ๐ฎ๐น๐๐ต๐ ๐๐ฟ๐ถ๐ป๐ธ๐ถ๐ป๐ด ๐ช๐ฎ๐๐ฒ๐ฟ: The PH value of healthy drinking water is normally between 6.5 and 8.5. The PH meter for water could help detect drinking water at any time, so that we could drink healthy water at ease and make our family's life better. ๐๐พ๐๐ฎ๐ฟ๐ถ๐๐บ ๐ช๐ฎ๐๐ฒ๐ฟ: Digital PH meter could often help us to detect the water quality of aquarium water and family goldfish tanks. read aquarium water PH with this PH tester, so you could create a healthy environment for fish. ๐๐ฎ๐ฟ๐ฑ๐ฒ๐ป๐ถ๐ป๐ด ๐ช๐ฎ๐๐ฒ๐ฟ: A helpful tool in the gardening world --- PH meter for water. Make your water trust worthy and safer to use. Know what water your plants really needs is better for you with this ph meter. ๐๐ผ๐ ๐๐ผ ๐๐ฎ๐น๐ถ๐ฏ๐ฟ๐ฎ๐๐ฒ: โบBefore calibration, add the pH4.00/pH6.86/pH9.18 calibrate packets into beaker with 250ml of water, then stir until the calibrate packet has completely dissolved. โบPress the ON/OFF button to turn on the ph meter. โบPut the electrode into pH4.00/pH6.86/pH9.18 standard solution, waiting for the readings to stabilize (usually 5~10 Seconds). โบPress and hold the CAL/ATC button and release after 5-6 seconds. - Display screen will flash โ6.86โ three times. - Wait it until the display screen stops flashing. - Until the readings of pH4.00/pH6.86/pH9.18 is no longer flashing, the calibration of pH4.00/pH6.86/pH9.18 is completed. โบRinse the electrode with distilled water and make PH Meter dry. ๐ช๐ต๐ฎ๐ ๐ฌ๐ผ๐ ๐๐ฒ๐: 1 x PH Meter. 3 x Calibration Packets. 1 x Carrying Case. 1 x User's Manual. ๐๐ถ๐ป๐ฑ ๐ฅ๐ฒ๐บ๐ถ๐ป๐ฑ: 1.Please re-calibrate, if the ph tester was used / lay aside long time or replace battery. 2.Please do not touch the electrodes with