Wiztech Digital PH Meter with ATC 3 in 1 PH TDS Temp High Accuracy Pocket Size Water Quality Tester for Drinking Water Pool Lab Food Processing Aquarium Pond Beer Brewing Kombucha

How to Calibrate the pH Meter Take ph 9.18 standard solution as an example Power on?Press the MODEL/CAL button ? Adjust to pH mode? Put the electrode into pH9.18 standard solution, then wait for the readings to stabilize(usually 5~10 Seconds) ? Press and hold the MODEL/CAL button and release after 6 seconds?untill the readings of pH9.18 is no longer flashing, and the calibration of pH9.18 is completed. Rinse the electrode with distilled water and blot dry. Repeat the above steps if you need to calibrate other solutions. How to make a standard solution: Completely empty the powder into a clean 250ml glass beaker. Add 250ml of PH Buffer Powder to the beaker. Still until the powder has completely dissolved.