Second try Mango Smile

Double-Check Calibration Solutions: Ensure that you are using fresh and correctly prepared calibration solutions. Using old or contaminated solutions can lead to calibration issues. Repeat Calibration Steps: Even if the standard procedure is not working, try repeating the calibration steps multiple times. Make sure you are following the correct sequence (7 pH, 4 pH, then 10 pH). Check Electrode Condition: Examine the condition of the pH meter electrode. If it's damaged or contaminated, it may affect calibration. Follow the manufacturer's instructions for cleaning or replacing the electrode if needed. Let it Stabilize: After placing the meter in the calibration solution, allow it some time to stabilize before confirming the reading. This could take a minute or two. Temperature Consideration: Some pH meters are temperature-sensitive. Ensure that the calibration is done at the recommended temperature. Some meters come with automatic temperature compensation (ATC) features. Try Different Calibration Solutions: If possible, try using calibration solutions from a different batch or source to rule out issues with the solutions themselves. If you've exhausted these options and are still facing calibration problems, it's crucial to contact Yinmik's customer support for guidance.