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<p>[QUOTE=&quot;desertgem, post: 1881271, member: 15199&quot;]Here is the MSDS on EZ-est ( formerly jeweluster). Active ingredients are&nbsp; 2% by weight Sulfuric acid and 7% Thiourea ( a carcinogen listed by Caliornia), and (&nbsp; a harmless surfactant/coloring I suspect)</p><p><br /></p><p><a href="http://www.wizardcoinsupply.com/files/images/E-Z-Est-MSDS.pdf" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.wizardcoinsupply.com/files/images/E-Z-Est-MSDS.pdf" rel="nofollow">http://www.wizardcoinsupply.com/files/images/E-Z-Est-MSDS.pdf</a></p><p><br /></p><p>The liquid is ( imo) far too concentrated for a beginner to know when to stop and quickly rinse to stop residual action. I dilute it to a factor of 10 % and have time for any observations. Remember , you can always resume, but you can&#039;t go back ! By taking off just a thin layer, you might preserve some of the original patina ( be an artist, not a doctor)</p><p><br /></p><p>If you have access to the chemicals you can make your own.[/QUOTE]</p><p><br /></p>

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