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<p>[QUOTE=&quot;Kentucky, post: 2350146, member: 33176&quot;]Not sure if I totally agree with the wikipedia article, especially when the same article recommends (and I quote):</p><p><font size="4"><b>&quot;Internal treatment[<a href="https://en.wikipedia.org/w/index.php?title=Bronze_disease&amp;action=edit&amp;section=5" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/w/index.php?title=Bronze_disease&amp;action=edit&amp;section=5" rel="nofollow">edit</a>]</b></font></p><p>If chloride ions have penetrated beyond the surface more rigorous treatment is required.</p><p>This typically involves soaking in acetone to displace any water in the specimen. Then soaking in a <a href="https://en.wikipedia.org/wiki/Benzotriazole" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Benzotriazole" rel="nofollow">benzotriazole</a> (BTA)–<a href="https://en.wikipedia.org/wiki/Ethanol" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Ethanol" rel="nofollow">ethanol</a> solution to <a href="https://en.wikipedia.org/wiki/Chelate" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Chelate" rel="nofollow">chelate</a> the copper and make it unreactive. Pits and holes may be filled with zinc powder which is then painted over with <a href="https://en.wikipedia.org/wiki/Shellac" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Shellac" rel="nofollow">shellac</a> coloured to look like the specimen.&quot;[/QUOTE]</p><p><br /></p>

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