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<p>[QUOTE=&quot;BadThad, post: 521035, member: 17261&quot;]Oil has no pH, you didn&#039;t give them a &quot;base bath&quot;. The luster was lost over time due to impurites in the oil sitting on the surface all these years. Unless the coins were rinsed with a non-polar organic solvent like xylene, the oil stayed on the surface.</p><p>&nbsp;</p><p>Micro-organisms actually prefer an acidic environment. In fact, they produce hydrogen ions and will actually lower the pH of an aqueous solution over time. An acid bath, unless it&#039;s extremely low pH (&lt; 2), will NOT kill micro-organisms. Even that may not kill them all, they are very tough little buggers!</p><p>&nbsp;</p><p>Sorry, but you have this all wrong....just trying to clarify a few points.[/QUOTE]</p><p><br /></p>

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