The value indicated in the pH calibration window is the theoretical pH converted from the electrode potential (mV), and is not the calibrated pH value.
To confirm that the pH was calibrated correctly, after finishing the calibration, check it in the initial window (when reset).
FAQAutomatic Potentiometric Titrators
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Automatic Potentiometric Titrators
Q
When checking again after the pH is calibrated, the calibrated pH value is not displayed in the calibration window. Why is this?
A