22
ELECTRODE CALIBRA
TION
7.2. CALIBRATION PROCEDURE
One-Point Calibration
• The 8.20 buffer will be selected by default. If necessary, press the
/
keys to select a
different buffer value.
• The symbol will be shown on the display until the reading becomes stable.
• When the reading is stable and close to the selected buffer, the symbol will disappear and the
Confirm
key will become active.
• Press
Confirm
to confirm the calibration point. The calibrated value will be shown on the display
and the second expected buffer value will be displayed.
• After the calibration point has been confirmed, press the
ESC
key to exit and save the one-point
calibration.
Two-Point Calibration
• Remove the electrode holder with electrodes from the top of the beaker.
• Place the second beaker with calibration buffer in the beaker holder. Rinse the electrodes in a
beaker containing the second buffer rinsing solution.
• Place the electrode holder (with electrodes) on the top of the beaker and secure it by turning
clockwise and press the
STIR
key.
• If necessary, press the
/
keys to select a different buffer value.
Note:
Previously confirmed buffers are removed from the list of available buffers.
• The symbol will be shown on the display until the reading becomes stable.
• When the reading is stable and close to the selected buffer, the symbol will disappear and the
Confirm
key will become active.
