𝗦𝘄𝗶𝗺𝗺𝗶𝗻𝗴 𝗽𝗼𝗼𝗹 𝘄𝗮𝘁𝗲𝗿: 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. 𝗛𝗲𝗮𝗹𝘁𝗵𝘆 𝗗𝗿𝗶𝗻𝗸𝗶𝗻𝗴 𝗪𝗮𝘁𝗲𝗿: 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. 𝗔𝗾𝘂𝗮𝗿𝗶𝘂𝗺 𝗪𝗮𝘁𝗲𝗿: 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. 𝗚𝗮𝗿𝗱𝗲𝗻𝗶𝗻𝗴 𝗪𝗮𝘁𝗲𝗿: 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. 𝗛𝗼𝘄 𝘁𝗼 𝗖𝗮𝗹𝗶𝗯𝗿𝗮𝘁𝗲: ►Before 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. ►Press the ON/OFF button to turn on the ph meter. ►Put the electrode into pH4.00/pH6.86/pH9.18 standard solution, waiting for the readings to stabilize (usually 5~10 Seconds). ►Press and hold the CAL/ATC button and release after 5-6 seconds. - Display screen will flash “6.86” 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. ►Rinse the electrode with distilled water and make PH Meter dry. 𝗪𝗵𝗮𝘁 𝗬𝗼𝘂 𝗚𝗲𝘁: 1 x PH Meter. 3 x Calibration Packets. 1 x Carrying Case. 1 x User's Manual. 𝗞𝗶𝗻𝗱 𝗥𝗲𝗺𝗶𝗻𝗱: 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