horiba LAQUA Series, Instruction Manual

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Maintenance and storage
48
● Maintenance and storage of the conductivity electrode
This section describes an overview of the procedures for maintenance and storage of
conductivity electrode.
● How to clean the electrode
Always clean the electrode with deionized water after every measurement. When the response
is slow or residue from the sample adheres to the electrode, use the appropriate method below
to clean the electrode, and then clean again with deionized water.
● Daily storage of the electrode
If the electrode is stored in a dry state, the cell constant will change. Store with the black
electrode part immersed in deionized water, or with the protective cap filled with deionized
water and attached to the electrode.
● When the electrode will not be used for a long period
To store the electrode for a long period, clean it well and attach the protective cap filled with
deionized water.
Type of dirt Cleaning solution
General Diluted neutral cleaning solution
Inorganic substance Ethanol
Scale that formed during
long term storage
A commercially available scale remover (neutral cleansing
solution for kitchen use, etc.) diluted by a factor of 100. If this
does not remove the scale, use diluted solution that contains
oxygen bleach (sodium percarbonate) or chlorine bleach
(sodium hypochlorite).