4
Storage
1. Wash the electrode well with pure water (or deionized
water) to remove sample completely and wipe it with
filter paper or tissue paper.
2. Close the internal solution filler port.
3. Wash the inside of the protective cap with pure water (or
deionized water), then add pure water (or deionized
water) until the sponge gets wet.
4. Attach the protective cap.
Note
Do not dry the responsive glass membrane and liquid
junction. If they are dry, replace the internal solution and
immerse them in pure water (or deionized water) for 24
hours or longer. After these procedures, perform
calibration. If calibration cannot be performed correctly,
replace the electrode.
Avoid storing the electrode in hot and humid locations.
Store the electrode indoors, out of direct sunlight.
Protective cap
For accurate measurement
For accurate measurement, refer to items below.
Stir the sample with stirrer in measurement (calibration).
Perform temperature compensation manually or
automatically. (Refer to the instruction manual of pH
meter.)
Temperature of standard solution and sample should be
the same.
Rinse the electrode with the sample before
measurement.
Immerse the responsive glass membrane and liquid
junction in the sample completely. Make sure that the
surface of the internal solution inside the electrode is
higher than the surface of the sample solution.
Perform calibration before measurement.
If measurement is performed everyday, perform
calibration once or more a day.
