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Reference electrode Chauvinx Arnoux BR42

Reference electrode Chauvinx Arnoux BR42

Product Information

Manufacturer: Chauvin Arnoux
Model: BR42
Warranty: 12 months

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Category: Electrode & Probes

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Description
DOCUMENTS

pH measurements with separate electrodes require the use of a measurement electrode and a reference electrode. The latter will retain a constant, stable potential during the measurements.
– Calomel (Hg/Hg₂Cl₂) reference electrode, usually called an SCE (Saturated Calomel Electrode).
This comprises a glass tube in which a drop of mercury and mercury chloride (calomel) are placed in contact with a platinum wire. The reference element is filled with a saturated KCl solution (KCl 3 mol/L).
– Equipped with a porous ceramic junction which allows the reference electrolyte to “sweat” but prevents it from flowing freely.
– High stability over time and low temperature coefficient.
This is ideal for many applications except for those where the chloride ions might react with a compound present in the solution, as is the case with Ag+ ions with which the chloride ions form a precipitate, AgCl. In such cases, a mercurous sulphate reference electrode should be used.
The choice of the reference electrode depends above all on the experimental conditions for your measurements.
This reference electrode should be used with a measurement electrode (BV41A/H or XV41) for correct pH measurement.
– Various connection technologies are available for adaptation to all your instruments.

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