Electrode Conditioning And Maintenance - Hanna Instruments HI21 Series Instruction Manual

ELECTRODE CONDITIONING AND MAINTENANCE

PREPARATION
* Only available with refillable electrodes. For industrial applications, gel-filled electrodes are preferable due
to lesser maintenance requirements.
Remove the protective cap.
DO NOT BE ALARMED IF ANY SALT DEPOSITS ARE PRES-
ENT.
This is normal with electrodes and they will disappear when
rinsed with water.
During transport tiny bubbles of air may have formed in-
side 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.
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