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<p>[QUOTE=&quot;desertgem, post: 767846, member: 15199&quot;]For silver coins only.</p><p>If there was bad toning/tarnish, yet the underlying luster was good enough that I was sure it hadn&#039;t been badly dipped already. If you can&#039;t tell , it would be a guess as to how it would come out, but usually not good.</p><p><br /></p><p>I would use the old Jeweluster/EZest formula, but I would dilute it 1:10 with distilled water in a small beaker before I use it. This decreases the activity of the sulfuric acid/thiourea greatly and allows a person to be able to better see what is happening. I really don&#039;t advocate the SpeedDip version, as it is even more concentrated and more use in industrial applications. Solutions should be disposed and not returned to the container. I know they call it a dip, but where do you think the ions you remove from the toned/tarnished go? They stay in the solution if you dip it. That is why extensive rinsing is needed to avoid future problems if you don&#039;t dispose of used solutions. That is my opinion.</p><p><br /></p><p><br /></p><p><b>You can always re-dip, but you can&#039;t UN-DIP.</b></p><p><br /></p><p>Jim[/QUOTE]</p><p><br /></p>

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