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Chapter 6 Maintenance
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wash clean the electrode, then it’s soaked
for 10~20 minutes in
NH3.H20 after the solution is evacuated, but the NH3.H20 can’t enter
the internal part of the electrode. The electrode is picked out and
washed clean by distilled water, which can be continued to use by
adding internal solution.
(3) Vacuum method: use soft tube to cover the solution border of the
reference electrode, use pump to suck the internal solution until
penetrate the solution border, and then the mechanical blocking
materials are removed.
(4) Solution border is boiled: the solution border of Ag-AgCl reference
electrode is soaked in boiled water for 10~20 seconds. Notice that the
electrode shall be cooled to room temperature before the next boiling.
(5) The mechanical method of abrasive paper can be adopted to eliminate
the blocking when the above mentioned methods are invalid, this
method possibly blocks the ground sand grains into the solution border
and cause permanent blocking.