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Thermo Scientific Orion Star LogR™ Meter User Guide
pH Technique
pH Calibration
1. Prepare the electrode according to the electrode user guide.
2. In the setup mode, select the buffer set (
or
) that will be used for
the automatic buffer recognition feature.
3. In the measurement mode, press
until the arrow icon points to the top line,
press
until the
pH
icon is shown and press
to begin the calibration.
4. Rinse the electrode, and ATC probe if being used, with distilled water and place
into the buffer.
5. Wait for the
pH
icon to stop flashing.
a. Automatic buffer recognition – When the
pH
icon stops flashing the meter
will display the temperature-corrected pH value for the buffer.
b. Manual calibration – When the
pH
icon stops flashing the meter will display
the actual pH value read by the electrode. Press
until the first digit
to be changed is flashing, press
/
to change the value of the
flashing digit and continue to change the digits until the meter displays the
temperature-corrected pH value of the buffer. Once the pH buffer value is
set, press
until the decimal point is in the correct location.
6. Press
to proceed to the next calibration point and repeat steps 4 and 5
or press
to save and end the calibration.
7. The actual electrode slope, in percent, will be displayed in the main field and
will be displayed in the lower field.
a. For a one point calibration, press
and
/
to edit the slope and
press
to return to the measurement mode.
b. For a two or more point calibration, the meter will automatically proceed to
the measurement mode after the slope is displayed.
Содержание Orion Star LogR Meter
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