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2.
90XL pH Sensor Module
Gather the following supplies:
·
7.00 pH buffer solution, Mesa P/N 02.0031
·
90XL Sample Kit, Mesa P/N 503110017
To verify calibration of the pH sensor module:
1.
Rinse the sample tray and the pH sensor probe with some of the buffer
solution to eliminate any contaminants. Discard the rinse solution – do not
pour used solution back into the original container.
2.
Pour approximately 50 ml of fresh solution into sample tray.
3.
Insert the pH probe into the outer sensor holder. Gently swirl the solution in
the tray and allow the display reading to stabilize.
4.
Observe the reading on the display. If this displayed value is within
specification based on the value of the buffer solution used, then calibration
is not needed. If this value is outside of specifications, then calibration is
needed. See the section entitled “Calibration and Maintenance”.
5.
Using appropriate pH buffer solutions, calibration may be verified at values
other than pH 7.00. Note that pH 10.00 buffer is temperature sensitive and
may not display 10.00, except at 25.0°C. See label for temperature
compensation information.
pH buffer solution
To 90XL pH Sensor Module
