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Combination pH electrodeDRV2

- 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.
Elect. combinee pH DRV2H

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