Hanna Instruments HI 8711 - Manual (Page 37)

37
PREPARATION PROCEDURE
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 air bubbles may form inside the glass bulb, and the
electrode cannot function properly under these conditions. Remove the
bubbles by "shaking down" the electrode as you would do with a glass
thermometer.
If the bulb and/or junction are dry, soak the electrode in HI 70300
storage solution for at least one hour.
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