User's Manual

pH ELECTRODE CONDITIONINGpH ELECTRODE CONDITIONING

pH ELECTRODE CONDITIONING

& MAINTENANCE& MAINTENANCE

& MAINTENANCE

PREPARATION

Remove the protective cap.

DO NOT BE ALARMED IF ANY SALT DEPOSITS ARE PRESENT.

This is normal with electrodes and they will disappear when rinsed

with water.

During transport tiny bubbles of air may have formed inside the glass

bulb (membrane). shake down the electrode as you would do with a

glass thermometer to remove these bubbles.

If the bulb and/or junction are dry, soak the electrode in a HI 70300

Storage Solution overnight.

STORAGE

To minimize clogging and assure a quick response time, the glass

bulb and the junction should be kept moist and not allowed to dry

out. This can be achieved by installing the electrode in such a way

that it is constantly in a well filled with the sample (stream or tank).

When not in use, pour a few drops of HI 70300 Storage Solution or,

in its absence, HI 7007 pH 7.01 Buffer Solution in the protective cap

and replace it on the electrode.

Note: NEVER STORE THE ELECTRODE IN DISTILLED OR DEIONIZED

WATER.

PERIODIC MAINTENANCE

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

to the controller must be intact and there must be no points of broken

insulation on the cable or cracks on the electrode stem or bulb.

The connector must be perfectly clean and dry. If any scratches or

cracks are present, replace the electrode. Rinse off any salt deposits

with water.

CLEANING PROCEDURE

Soak in Hanna HI7061 General Cleaning Solution for ½ hour.

For more specific cleaning procedures, refer to the electrode’s instruc-

tion manual.

IMPORTANT: After performing any of the cleaning procedure rinse

the electrode thoroughly with distilled water and recalibrate the

controller.