- Fillable combination electrode
Reference electrode + measurement electrode in the same housing
- For pH measurement in clogging samples.
- For use in the laboratory and in industry thanks to the PVC part (extra-rugged)
- Composition of the electrode: 1 glass electrode + 1 mechanical junction
These two elements are positioned in the same
plane. The mechanical junction (pushbutton), which serves as a drainage bridge, allows pH measurements
in clogging samples such as paints, emulsions and creams… This
configuration can be used for accurate measurements in difficult samples.
The DRV2 electrode
can be supplied in two versions, according to the type of glass blown: either glass A or glass H. The difference between these two types of glass lies in
the properties of the glass. Glass A
allows measurements in highly alkaline
environments and its measurement range extends from 0 to 14, whereas glass H
is a universal glass allowing
accurate measurements up to pH 12.
The glass is the element sensitive to oxonium ions (H3O+(aq))
when the electrode is immersed in an aqueous solution, because the potentials are different on either side of the glass membrane due to the different ion exchanges between the membrane and the solution.
- Filled with liquid electrolyte: KCl 1 mol/L.
Advantages of a liquid electrolyte:
-> Possibility of topping up or emptying the electrolyte in the event of contamination -> extension of the electrode's life span.
Advantages of KCl 1 mol/L:
-> Less crystallization if the liquid evaporates on the membrane because the KCl concentration is quite low
-> Reduced risk of clogging the junction
=> Extension of the electrode's life span
For further technical details, please read the sales brochure on the electrodes and/or contact us.