25
ELECT
rODE
C
ALIB
rA
TION
Pr
OCEDU
rE
One-Point Calibration
• The 8.30 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 calibration point has been confirmed, press
ESC
to exit without performing the second
calibration point.
Two-Point 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.
• 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.