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Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 OBS

In order to avoid the risk of scale formation, [polarity reversal electrodialysis] consists in reversing the polarity of the electrodes on a regular basis (for instance for five minutes every 30-60 minutes), thus instantaneously switching the concentration and desalination compartments, and thereby the position of the polarization layers that change sides on the membrane.  1, record 1, English, - polarity%20reversal%20electrodialysis

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 CONT

[L']électrodialyse à inversion de polarité [...] consiste, pour éviter les risques d'entartrage, à inverser régulièrement la polarité des électrodes (par exemple 5 minutes toutes les 30 à 60 minutes) et à permuter ainsi instantanément compartiments de concentration et compartiments de dessalement et donc la position des couches de polarisation qui changent de côté de la membrane.  1, record 1, French, - %C3%A9lectrodialyse%20%C3%A0%20inversion%20de%20polarit%C3%A9

Record 1,  Textual support,  Spanish