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For refillable electrodes, if the refill solution (electrolyte) is more than 2.5 cm
(1”) below the fill hole, add the appropriate electrolyte solution.
MEASUREMENT
Rinse the electrode tip with distilled water, immerse it (4 cm / 1½”) in the
sample and stir gently for a few seconds.
For a faster response and to avoid cross contamination of the samples, rinse the
electrode tip with the solution to be tested, before taking any measurements.
STORAGE PROCEDURE
To minimize clogging and ensure a quick response time, the glass bulb and the
junction should always be kept moist.
When not in use, store it with a few drops of HI70300 storage solution in the
protective cap.
NEVER STORE THE ELECTRODE IN DISTILLED OR DEIONIZED WATER.
PERIODIC MAINTENANCE
Inspect electrode and cable. The cable used for the connection to the meter must
be intact and there must be no points of broken insulation on the cable or cracks
on the electrode stem or bulb. If any scratches or cracks are present, replace the
electrode. Rinse off any salt deposits with water.
Connectors must be perfectly clean and dry.
For refillable electrodes:
Refill the electrode with fresh electrolyte (see the electrode’s specifications to
select the correct refilling solution). Allow the electrode to stand upright for
1 hour. Follow the Storage Procedure above.
CLEANING PROCEDURE
• General Soak in HI7061 general cleaning solution for approxi-
mately 30 minutes.
• Protein Soak in HI7073 protein cleaning solution for 15 min.
• Inorganic Soak in HI7074 inorganic cleaning solution for 15
minutes.
• Oil/grease Rinse with HI7077 Oil & Fat cleaning solution for
1 minute.
IMPORTANT: After performing any of the cleaning procedures, rinse the electrode
thoroughly with distilled water and soak it in HI70300 storage solution for at
least 1 hour before taking measurements.
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