One article to understand the detailed steps of pH meter calibration
1. Remove the pH meter probe to be calibrated;
2. Wipe off the attachments on the probe, rinse the probe and dry it
3. Press the [ CALIBRATE/HOLD5SEC key for 5 seconds;
4. The screen displays "CALIBRATE", then press the [CALIBRATE/HOLD5SC key;
5. Use the "↑" and "↓" keys to select "2 POINT", and then press [ CALIBRATE/HOLD5SEC
6. The screen displays "ⅹ℃", use the "↑" and "↓" keys to adjust "X℃" to room temperature, and then press the [CALⅠ BRATE/HOLD5SEC] key;
7. The screen displays the predetermined pH value of the standard solution, use the "↑" and "↓" keys to adjust the predetermined pH value to be the same as the pH value of the standard solution used for calibration
8. Insert the probe into the standard solution, and then press the [ CALIBRATE/HOLD5SEC key, wait for the value displayed on the screen to be relatively stable, then press the [ CALIBRATE/HOLD5SEC key
9. Take out the probe, rinse and dry
10. The screen displays the predetermined pH value of the standard solution. Use the "↑" and "down" keys to adjust the predetermined pH value to be the same as the pH value of the standard solution used for calibration; 1. Insert the probe into the standard solution, and then press "[ CALIBRATE/ HOLD5SEC key, after the value displayed on the screen is relatively stable, press [ CALIBRATE/HOLD5SEC key
12. Press the [CALIBRATE/HOLD5SEC key again until the display of the pH value is resumed. At this point, the calibration of the pH meter is completed.
