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<p>[QUOTE=&quot;desertgem, post: 596445, member: 15199&quot;]Boss, watch carefully for darkening a while after the peroxide treatment. Since it is H2O2 and breaks down into water and oxygen, It seems chemically possible that copper without a natural patina could combine with the active oxygen to make CuO which appears often as &#039;carbon spots&#039; after a period of time.</p><p><br /></p><p>By the way, you can get 30% H2O2 from chem supply, but it is real bad stuff unless you are building a rocket.<img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie8" alt=":D" unselectable="on" unselectable="on" /></p><p><br /></p><p>Yea! an experiment!!!:eating:&nbsp; &nbsp; I am still trying to understand BIOX enough to start one on it. Can&#039;t get the repeatability level of Verdigone. May be a while for that.</p><p><br /></p><p>Jim[/QUOTE]</p><p><br /></p>

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