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<p>[QUOTE=&quot;BadThad, post: 520503, member: 17261&quot;]It&#039;s true that mineral oil is resistant to oxidation, much more so than veg based oils, which require antioxidant packages to remain stable under any condition. Sulfur will only covalently react with mineral oil under somewhat extreme conditions. The trace sulfur present in oil is NOT bound. It is DISSOLVED and free to react. All it requires is a surface to react with, regardless of temperature (temperature will only affect the rate). </p><p>&nbsp;</p><p>I recall reading an article not long about about an accelerated test. However, the conditions (as I recall) were EXTREMELY severe. While as a scientist, I do not disagree with the basis of the methodology, as there&#039;s no other way to evaluate the effectiveness, I feel the test was not of the &quot;real world&quot;. A careful and astute collector should be aware that something like an Airtite is not the final measure of protection, but one of many steps.</p><p>&nbsp;</p><p>My long term storage procedure is very thorough and I believe my coins will last virtually forever. I rinse the coin with acetone to remove trace moisture and residual, soluble contaminants. The Airtite is blown out with canned air to remove particulate matter and the coin is sealed. The Airtite is placed into a 2x2 holder so I can write the date/mint/grade on it. That 2x2 is placed into a Cowen 2x2 plastic sheet and affixed to a 3-ring binder. The entire binder is then put into a giant ziplock bag with a huge dessicant pack or two. Then I take the whole bag to the bank for safe keeping in a deposit box.</p><p>&nbsp;</p><p>I&#039;d be willing to put my entire bag into any of accelerated conditions specified in their test....I&#039;d also be willing to bet that my collection would suffer no ill effects. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie8" alt=":D" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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