How can I reduce sodium chloride levels in water, without removing other minerals? Good day, I make a sole from Himalayan Salt which I add to my Reverse Osmosis treated water to ensure my body isn't rob of essential minerals, but the levels of sodium chloride are very high. How would I remove some of the NaCl without affecting the other minerals?

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    $\begingroup$ What you are asking is not possible using any conventional system that you would be able to obtain. Your only real solution is to take a different approach. Buy the individual salts (e.g., KCl, NaCl, CaCO3) and make a mixture yourself. $\endgroup$ – prof.kvothe Apr 1 '19 at 14:36
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    $\begingroup$ If you remove the NaCl from Himalayan salt there isn't much left. $\endgroup$ – Waylander Apr 1 '19 at 14:46
  • $\begingroup$ Other than fluoride, drinking water is not a useful source of minerals. You get all you need from a normal diet. As for fluoride, most toothpastes and some mouthwashes contain supplements. $\endgroup$ – DrMoishe Pippik Apr 3 '19 at 0:30

Removing a major component does not make sense. Better is to balance it with other ions, as $\ce{K+, Ca^2+, Mg^2+, HCO3-, H2PO4-, SO4^2- }$. But the gain and safety to provide nutrients by the form of dissolved salts is questionable. I think, providing minor mineral nutrients by $\ce{NaCl}$ of whatever origin is a bad idea in the first place.


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