It is important to know accurately the distribution of electric current in an ion-exchange membrane electrodialyzer and to uniform it for avoiding the dissolution of water and the formation of scales. Assuming the electrodialyzer as an equivalent circuit, therefore, the authors studied how to measure the current distribution, and obtained the following measuring method:
1. On the basis of our basic examination by using various equivalent circuits and setting up a compartment having a uniform electro-resistance-strong stream of known conductance solution, we obtained the changes of the current distribution from the changes of the potential distribution.
2. We discussed it on two types of experimental apparatus and found that the measuring method could be applied to the actual electrodialyzer of salt-making factories and the tight chamber would be suitable as a measuring compartment.
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