Quote:
Originally Posted by leathermang
My impression is that... like dissimilar metals in contact... there is too much difference .. thus causing transfer of metal to the liquid... like a plating tank ... or unplating as the case might be....
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Good points. I do not know if you are measuring a decrease in conductivity as the chemical is consumed or an electrochemical phenomena due to the difference in chemical potential of the various materials in contact with each other and the fluid.
After all of this I'm going to take a look at my radiator!