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<p>[QUOTE=&quot;John Burgess, post: 6361828, member: 105098&quot;]As far as dealing with the PVC exposure, you&#039;d want to visually inspect each one after removing them from the flip, look for signs of discoloration on the coin, slime, or what appears like a water mark that dried up. if all is well, just switching the flip is fine. if there is PVC degradation that is affecting the coin, then you&#039;d want to remove it. it should be relatively obvious though, the flip will be gross and the coin won&#039;t look like it did when you put it in there if it&#039;s being affected. slightly sticky? Funny smell to it?&nbsp; anything that isn&#039;t normal that would tip you off to there being a PVC contamination issue. </p><p><br /></p><p>First though is finding out if there is a problem that needs to be dealt with. there may not be yet. Even the PVC flips are pretty much problem free for the first 6 months of storing in them, after that you start the gambling though, the clock is ticking.</p><p><br /></p><p>it&#039;s actually the plasticizers in the PVC flips that degrades and leeches out of them onto the coins along with the chlorides over time. PVC is hard, but the more plasticizer is in it, the softer it becomes (hence the shower curtain smell that Evan asked about <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" /> ) and if you&#039;ve ever kept a shower curtain way too long, you&#039;d of noticed it loses the smell and becomes brittle in spots and start cracking, that&#039;s the Plastizer leeching out over time.&nbsp; </p><p><br /></p><p>there&#039;s plenty of threads and info on how to treat PVC contamination, or just acetone dipping coins before putting them away to remove any possible contaminants from the surfaces. but, lets see if there&#039;s any problems first, then worry about how to correct it if it&#039;s even there. </p><p><br /></p><p>PVC flips can last a long time unless the collection is stored in less than ideal conditions like a hot garage or 120 degree attic, or a humid/damp environment so there may not be any issue started yet.[/QUOTE]</p><p><br /></p>

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