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<p>[QUOTE=&quot;GDJMSP, post: 2211246, member: 112&quot;]And that&#039;s the reason I question the validity of the test - because I believe it is the copper making the flame green - not the plastic.</p><p><br /></p><p><br /></p><p><br /></p><p>I have, which is why I said what I did. And also why I question the test.</p><p><br /></p><p><br /></p><p>Next you&#039;re going to want me to define &quot;stuff&quot;. Well I&#039;m talking about other plastic flips, other plastics (none of which had the softening agents in them), even some different paper products, basically anything that I could get my hands on that would burn. And when burned on copper some of it would have a greenish flame, on steel it would not.</p><p><br /></p><p>I used to test all sorts of things regarding coins and the hobby, and make note of my own observations. And when my observations would differ from what it said in some book or internet article, then I would wonder why. And I learned long ago, at a very young age, that you can&#039;t always trust &quot;science&quot;.</p><p><br /></p><p><br /></p><p>edit - I suppose the most important point is that this burning test is not even necessary to determine whether flips are safe to use for coins or not. There are other ways, simpler ways, to find out. The smell for instance, the smell of PVC flips is quite distinctive. If the flips smell like a new shower curtain - you don&#039;t want to use them. If the flips feel even remotely stiff when you flex them, you don&#039;t want to use them. If they crack when bend them repeatedly, you don&#039;t want to use them. And all of these things are reliable, and require no burning of plastics.</p><p><br /></p><p>So, if there is a question on the validity of the burning test, and based on my observations there is, don&#039;t use it. And instead use one of the other very simple and easy ways.[/QUOTE]</p><p><br /></p>

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