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<p>[QUOTE=&quot;desertgem, post: 8388859, member: 15199&quot;]I am curious if the various use of &quot;burning&quot;, &quot;flames&quot;, etc. are being confused. It sounds like some are physically and chemically expecting to seal them with a flame&nbsp; or test them by using a flame such as a match. At least no one seems to be using a butane torch yet. To chemically test composition, a heated metal ( usually nichrome) needle or loop such as used in labs. Most Lowe&#039;s have such wire . Heat the wire and touch it to the plastic and check the color of the thin smoke to determine the presence chlorine or other volatiles.&nbsp; I have used Saflip holders for all long term storage of special coins not in a TPG plastic holder. I seal them with a electric &quot;bag&quot; sealer with adjustable heat so you don&#039;t burn though the area of the seal. That way there should be no splattered melt material with the coin, nor&nbsp; any burn residue. Jim[/QUOTE]</p><p><br /></p>

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