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Press to switch to Photometer mode.
Press to access the meter’s Setup menu.
Press to log the current measurement.
Press to review the meter’s log history.
Press to view contextual help information.
For high accuracy it is recommended to calibrate your electrode often. pH electrodes should be
recalibrated at least once per week, but daily calibration is recommended. Always recalibrate after
cleaning an electrode. See page 23 for more information on pH calibration.
To take pH measurements:
• Remove the protective cap and rinse the electrode with water.
• Collect some sample in a clean, dry beaker.
• Preferably, rinse the electrode with a small amount of sample. Discard the rinse.
• Submerse the electrode tip approximately 3 cm (1¼”) into the sample to be tested and stir the
sample gently. Make sure the electrode junction is completely submersed.
• Allow time for the electrode to stabilize in the sample. When the
symbol disappears, your
reading is stable.
If measurements are taken successively in different samples, it is recommended to rinse the
electrodes thoroughly with deionized or distilled water and then with some of the next sample to
prevent cross‑contamination.
pH measurements are affected by temperature. HANNA
®
Digital pH electrodes include a built‑in
temperature sensor and automatically calculate corrected pH values. The measured temperature is
displayed on the screen with the pH measurements.
PROBE MODE
