In a message dated 9/7/99 9:51:06 AM Mountain Daylight Time, spook01@home.com
writes:
<< The distilled water IS NOT more corrosive than tap water; deionized water
IS, however. >>
It is common knowledge among those knowledgeable about high purity water that
distilled water is almost always more corrosive than tap water. This is due
to the lack of ionized metals in it. For example, most tap water contains,
among other things, a presence of ionized iron. This "dissolved" iron is
removed in the distilling process. If the distilled water then comes in
contact with base iron there is a greater driving force for ionization
(corrosion) than if the water contained iron ions to begin with.
Deionized water is often even more corrosive than distilled water. This is
at least partly due to pickup of acids from the deionizing process.
Ray G
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