User Guide

Replace the solution in the protective cap with a few drops of HI

70300 Storage Solution. Follow the Preparation Procedure above

before taking measurements.

Note: NEVER STORE THE ELECTRODE IN DISTILLED WATER OR DRY.

PERIODIC MAINTENANCE

Inspect the electrode and the cable. The cable used for 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.

Connectors must be perfectly clean and dry.

If any scratches or cracks are present, replace the electrode.

Rinse off any salt deposits with water.

For refillable electrodes:

Refill it with fresh electrolyte (HI 7071 for single junction or HI 7082

for double junction electrodes). Allow the electrode to stand upright

for 1 hour.

Follow the Storage Procedure above.

CLEANING PROCEDURE

General Soak in Hanna HI7061 General Cleaning Solution for

approximately 1 hour.

Removal of films, dirt or deposits on the membrane/junction:

- Protein Soak in Hanna HI 7073 Protein Cleaning

Solution for 15 minutes.

- Inorganic Soak in Hanna HI 7074 Inorganic Cleaning

Solution for 15 minutes.

- Oil/grease Rinse with Hanna HI 7077 Oil and Fat Clean

ing Solution.

IMPORTANT: After performing any of the cleaning procedures rinse

the electrode thoroughly with distilled water, drain and refill the

reference chamber with fresh electrolyte, (not necessary for GEL filled

electrodes) and soak the electrode in HI 70300 Storage Solution for

at least 1 hour before taking measurements.

TROUBLESHOOTING

Evaluate your electrode performance based on the following possibilities:

• Noise (Readings fluctuate up and down) could be due to:

- Clogged/Dirty Junction: Refer to the Cleaning Procedure above.

- Loss of shielding due to low electrolyte level (in refillable

electrodes only): refill with fresh HI 7071 for single junction or HI

7082 for double junction electrodes.