13
TITRA
TOR SETUP
5. TITRATOR SETUP
5.1. ELECTRODE
Remove the electrode protective cap.
DO NOT BE ALARMED IF ANY SALT DEPOSITS ARE PRESENT. This is normal with electrodes and they
will disappear when rinsed with distilled/deionized water.
During transport, tiny bubbles of air may have formed inside the glass bulb. The electrode cannot
function properly under these conditions. These bubbles can be removed by "shaking down" the
electrode as you would do with a glass thermometer.
If the bulb is dry, soak the electrode in
HI70300
Storage Solution for at least one hour.
Storage
To assure a quick response time, the glass bulb should be kept moist and not allowed to dry out.
Replace the solution in the protective cap with a few drops of
HI70300
or
HI80300
storage solution.
Follow the preparation procedure section before taking measurements.
Note:
Never store the pH electrode in distilled or deionized water.
Periodic Maintenance
Inspect the electrodes and the cables. The cable used for connection to the instrument must be intact
and there must be no 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 distilled/deionized water.
Cleaning Procedure
Soak in Hanna
HI7061
or
HI8061
general cleaning solution for approximately ½ hour.
Rinse the electrode thoroughly with distilled or deionized water and soak the electrode in
HI70300
or
HI80300
storage solution for at least 1 hour before use. Recalibrate electrode before taking
measurements.
