Metrohm 949 - Page 36

5.5 pH parameters
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The WAIT FOR STABILITY message appears on the display and the
symbol flashes.
4
As soon as the symbol appears and the pH value flashes, enter
the correct value with the and buttons (e.g. 6.79).
NOTE
￭ The ADJUST VALUE message prompts the user to adjust the
value.
￭ Check the buffer value in relation to the temperature.
The WAIT FOR STABILITY message appears on the display and the
symbol flashes.
5
As soon as the symbol appears again, confirm the 1st calibration
point with the button.
The measured pH value will flash on the display. The symbol
appears with the color code of the 1st buffer.
Calibrating the 2nd point
1
Remove the electrode from the buffer solution.
2
Rinse the electrode with distilled water.
3
Immerse the electrode in the next pH buffer solution (e.g. pH 4.65).
The WAIT FOR STABILITY message appears on the display and the
symbol flashes.
4
As soon as the symbol appears and the pH value flashes, enter
the correct value with the and buttons (e.g. 4.65).