17
Thermo Scientific Orion Star A214 Benchtop and Star A324 Portable pH/ISE Meter Reference Guide
ORP Calibration
The mV reading of an ORP standard is dependent on the ORP electrode reference system, reference material and
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automatic calibration to the E
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different temperatures.
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according to the instructions in the electrode use guide. Connect the electrode and any other electrodes to be
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mode to ORP.
Note: In most calibration screens, press
f1 (esc)
to return to the measurement mode without saving the calibration.
1. In the measurement mode, press
f1 (cal)
.
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and place into the standard.
3. When the electrode and standard are ready, press
f3 (start)
. If using a Star A214 benchtop meter and stirrer
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f3 (start)
is pressed and stop stirring once the reading stabilizes.
4. Wait for the mV value on the meter to stabilize, indicated by the flashing
stabilizing
or solid
ready
icon, and
press
f2 (accept)
once the value is stable.
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log. Press
f1 (meas)
to proceed to the measurement mode or press
f2 (print)
to proceed to the measurement
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