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<p>[QUOTE=&quot;dougsmit, post: 4428439, member: 19463&quot;]Anything with less than normal mineral content will be better than nothing.&nbsp; I&#039;d try the grocery store stuff.&nbsp; In some places, the water is naturally free of minerals and will work while other places have water from wells with enough dissolved limestone in the water to make it worthless for the purpose.&nbsp; Tap water usually has chlorine which is not a good thing to put on coins.&nbsp; Perhaps the $50 reagent grade stuff would be better but I consider that as overkill.&nbsp; If you are running a dehumidifier and have that &#039;free&#039;, it should work.&nbsp; Years ago, I set up a pan which allowed the dehumidifier water to run over the coins and overflow effectively changing the water constantly.&nbsp; Grocery store water is easier.&nbsp; The less material other than H2O in your water, the more room there will be for things on the coin to dissolve into.&nbsp; Considering most of the uncleaned coin we see will never be worth as much as the cost of a bottle of water, we need to be reasonable in compromising here.[/QUOTE]</p><p><br /></p>

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