Protection for electrodes to prevent them from drying out

Device for protecting electrodes used for dosing chemicals, measuring pH and similar properties, has a receiver containing a conservation fluid (3) and means of sealed closure of the receiver. This closure also acts as a support for the electrode sleeve (5) so the active or sensitive part (4) of the electrode is permanently immersed in the fluid. The receiver has a flask body in rigid or semirigid material, in particular glass or plastic. The closure is a plug which can be fixed in a sealed manner on the flask. The plug can be made of a rigid or semirigid material, such as a plastic like Bakelite and is fixed by screwing on the thread on the neck of the receiver, or a sufficiently flexible material that it can be fixed by clipping. The plug and the neck of the receiver act together to close and open with a joint which ensures the seal and which has in its center an orifice which allows the passage of the electrode sleeve. The joint is made of a material which allows the sleeve to slide through whilst maintaining the seal, particularly by compression of the thread. In particular, this material is a silicone ring. L'invention concerne un dispositif pour la protection des électrodes utilisées pour les dosages de substances chimiques, la mesure de grandeurs telles que le pH et analogues. Le dispositif se compose essentiellement d'un récipient 1 destiné à contenir un fluide de conservation 3 et d'un moyen de fermeture étanche 2 du récipient, comportant un joint 7, adapté pour servir simultanément de support pour l'électrode, de telle sorte que la partie active ou sensible 4 de celle-ci soit immergée en permanence dans le fluide de conservation. L'invention permet d'éviter les dépôts de sels d'électrolytes qui se produisent sur l'électrode avec les dispositifs actuels.