28
28
pH
Press
Change
to modify the buffer value. Use the
/
keys to change the buffer value. Press
Accept
to save the value or press the
ESC
key to return to the calibration screen.
Calibration
Calibration can be performed directly in the sachets or using clean beakers.
1. Immerse the pH electrode approximately 4 cm (1½”) into a buffer solution and stir gently.
Note:
When using beakers, in order to minimize cross-contamination, use two beakers for each
buffer solution: one for rinsing the electrode and one for calibration.
2. Press the
CAL
key. The instrument will display the measured pH, the first expected buffer and
the temperature reading.
3. If necessary, use the / keys to select a different buffer value. The “ ” tag will blink on the
LCD until the reading is stable. After the reading has stabilized and is within the range of the
selected buffer,
CFM
functional key is displayed.
4. Press
CFM
to confirm first point. The calibrated value and the second expected buffer value are
then displayed on the LCD.
