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3.5
Wait for the reading to stabilize, the display will show electrode slope and
3.6
Rinse the pH electrode with distilled water, place the electrode (and temperature probe) into the pH10.01 (or 9.18) buffer
solution and stir gently.
3.7
Press the Enter key, the meter begins the calibration.
3.8
Wait for the reading to stabilize, the display will show electrode slope and
•
During the calibration, if the meter shows
uncontaminated.
•
If the electrode slope is not within the normal range, the
•
To exit the calibration mode without saving the calibration, press the Meas key.
Temperature Calibration
During the measurement, if the temperature reading displayed differs from that of an accurate thermometer, the temperature
probe needs to be calibrated.
1.
Connect the temperature probe to the meter and place into a solution with a known accurate temperature.
2.
Press the °C key to enter the temperature setting.
Press the / key to set the temperature value, press the Enter key to confirm.
3.
10
Measurement
Measurements
pH
1.
Press the Mode key until the meter shows the measurement unit pH.
2.
Rinse the pH electrode with distilled water. Place the electrode (and temperature probe) into the sample solution and stir
gently.
3.
Wait for the measurement to stabilize and record the pH and temperature values.
4.
When all of the samples have been measured, rinse the electrode with distilled water, store the electrode into the 3M KCL
solution.
mV
1.
Press the Mode key until the meter shows the measurement unit mV.
2.
Rinse the electrode with distilled water. Place the electrode into the sample solution and stir gently.
3.
Wait for the measurement to stabilize and record the mV value.
4.
When all of the samples have been measured, rinse the electrode with distilled water, store the electrode according to the
instructions in
the electrode user guides.
If the
option is enabled in the setup menu, the meter will automatically lock a measurement endpoint and show
icon.
Press the Meas key to resume measuring.
Electrode Care and Maintenance
pH electrode
Since pH electrode is susceptible to dirt and contamination, clean as necessary depending on the extent and condition of use.
•
General deposits: Rinse the electrode with distilled water, store the electrode into the 3M KCL solution.
, please check the pH electrode and ensure the pH buffers are fresh and
icon will disappear on the display.
/
( or
/
. Calibration is completed.
).
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