© PCE Instruments
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pH measurement
Check the electrode as described in chapter 5.3 and switch on the meter, see chapter 5.4.
Rinse the electrode with distilled water.
Immerse the electrode in the medium with the end of the electrode completely immersed in the
medium. Move the electrode slightly back and forth to make good contact with the measuring
medium.
Read the result after stabilisation.
With the automatic "Hold" function switched on, the measurement result remains on the display
after stabilisation. (see basic settings)
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Care and maintenance of the electrodes
For best results, always keep the glass-sensitive membrane moist.
Make sure that the electrode is thoroughly rinsed with distilled or deionised water after use.
If you do not use the meter for a long period of time, store the electrode in the 3M KCL solution.
(Storage solution PCE-SSOxxx)
If the meter cannot be calibrated or shows fluctuating readings for calibration standards, you must
replace the electrode.
Remove and attach the electrode in the same way as described in chapter 5.1.
10 Troubleshooting
Display indication
Cause of error
Troubleshooting
Electrode too dry
Place the electrode in a 3M KCL solution
for at least 15 minutes. (Storage solution)
Overrange
Check whether the electrode is dirty or
the glass body is defective.
Wrong buffer solution
Use the correct buffer solution.
Electrode defective
Replace the electrode.
