20
Point 1 calibration
• The 8.20 buffer will be selected by default. If necessary press the
ARROW
keys in order to
select a different buffer value.
• The
(unstable measurement) symbol will be shown on the display until the reading
becomes stable.
• When the reading is stable and close to the selected buffer, the
(unstable measurement)
symbol will disappear and the
Confirm
key will become active.
• Press
Confirm
to confirm the calibration or
ESC
to exit calibration.
• After the first calibration point has been confirmed, press
ESC
to exit without performing the
second calibration point.
Point 2 calibration
• The calibrated value will be shown on the display and the second expected buffer value will
be displayed.
• 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
STIR
.
• If necessary press the
ARROW
keys in order to select a different buffer value.
