Between measurements, cells should be rinsed with deionised water. If the cell has been exposed to a solvent immiscible with water, a solvent miscible with water should be used.
Between measurements, cells should be rinsed with deionised water. If the cell has been exposed to a solvent immiscible with water, a solvent miscible with water such as ethanol or acetone should be used or the cell rinsed carefully with water.
Deposits on the electrode surface of a 2-pole cell have a similar effect to polarisation errors, ie the conductivity reading is lower than usual. These effects can also be prevented with a 4-pole conductivity cell.
In the event of deposits on the cell, dipping the cell in a solution such as Radiometer Analytical’s RENOVOoN, Normal Cleaning Solution for approximately 1 hour is recommended. The cell should then be rinsed with distilled water.
Before storage, the cell should be rinsed carefully in deionised water.
Cells can be kept in deionised water for a short time but for longer periods they can also be stored dry. After long-term storage, it is advisable to condition the cell for 8 hours in deionised water.
Platinised cells should be handled with the greatest of care.
The black platinum layer of the platinised cells should not be touched.
To rinse the platinised cells, it is recommended to dip the cell several times in a beaker of demineralised water.
For more detailed information on how to get the best from your conductivity cells and optimise conductivity measurements in general, Radiometer Analytical produces a free Conductivity Theory and Practice booklet.
Radiometer Analytical develops and manufactures an extensive range of electrochemical systems dedicated for routine testing, research and teaching in the laboratory and on the plant.
It is active in the fields of pH, ion and conductivity measurements (systems for measurements in the field and in the lab); titration (workstations customised to individual applications) and voltammetry (all-in systems for electrochemical measurements and analysis).
Radiometer Analytical SAS is based in Villeurbanne, France.
