24
ELECT
rODE
C
ALIB
rA
TION
Pr
OCEDU
rE
One-Point Calibration
• The default buffer selected will be 7.01 if endpoint was set to 7.00 pH or else 8.20 pH will be
selected. 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.
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.