Hanna-instruments HI9126 Bedienungsanleitung PDF herunterladen (Seite 13)

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TROUBLESHOOTING GUIDETROUBLESHOOTING GUIDE

TROUBLESHOOTING GUIDE

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For refillable electrodes, if the refill solution (electrolyte) is more than

2½ cm (1") below the fill hole, add the appropriate Electrolyte Solution.

MEASUREMENT

Rinse the electrode tip with distilled water, submerse it 3 cm (1¼”) 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 HI 70300 storage

solution in the protective cap.

NEVER STORE THE ELECTRODE IN DISTILLED OR DEIONIZED

WATER.

PERIODIC MAINTENANCE

Inspect electrode and cable. The cable must be intact. No cracks

should be seen 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:For refillable electrodes:

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 Hanna HI 7061 General Cleaning

Solution for approximately ½ hour.

•

Protein

Soak in Hanna HI 7073 Protein Cleaning

Solution for 15 min.

•

Inorganic

Soak in Hanna HI 7074 Inorganic

CleaningSolution for 15 min.

•

Oil/grease

Rinse with Hanna HI 7077 Oil & Fat Cleaning

Solution for 1 min.

IMPORTANT: After performing any of the cleaning procedures, rinse

the electrode thoroughly with distilled water and soak it in HI 70300

Storage Solution for at least 1 hour before taking measurements.

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