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Beilstein test and a cappuccino.
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<p>[QUOTE="GDJMSP, post: 7996639, member: 112"]Here's the problem I've always had with the Beilstein test. What happens to copper when it corrodes ? It gets verdigris on it and verdigris is green. </p><p><br /></p><p>In other words, I always wondered if it was the copper causing the green color in the flame as opposed to the plastic in the flame causing the green color. So I tried using a piece of steel wire, and a piece of aluminum wire. Guess what, the flame didn't turn green any more. </p><p><br /></p><p>My point is this, by using copper wire you can get false readings because it's the copper causing the green color - not the plastic.</p><p><br /></p><p>You don't need a Beilstein test to tell if a coin flip has PVC softening agents in it. All you have to do hold the flip and bend it in your fingers. If it's very soft and pliable and bends very easily then you don't want to use it. If it's stiff, kinda hard, and semi-rigid, then you'll be fine.</p><p><br /></p><p>And when ya buy flips and open the package - smell it ! If it smells like a new shower curtain - you don't wanna use those flips ! </p><p><br /></p><p>Bottom line, forget the Beilstein test.[/QUOTE]</p><p><br /></p>
[QUOTE="GDJMSP, post: 7996639, member: 112"]Here's the problem I've always had with the Beilstein test. What happens to copper when it corrodes ? It gets verdigris on it and verdigris is green. In other words, I always wondered if it was the copper causing the green color in the flame as opposed to the plastic in the flame causing the green color. So I tried using a piece of steel wire, and a piece of aluminum wire. Guess what, the flame didn't turn green any more. My point is this, by using copper wire you can get false readings because it's the copper causing the green color - not the plastic. You don't need a Beilstein test to tell if a coin flip has PVC softening agents in it. All you have to do hold the flip and bend it in your fingers. If it's very soft and pliable and bends very easily then you don't want to use it. If it's stiff, kinda hard, and semi-rigid, then you'll be fine. And when ya buy flips and open the package - smell it ! If it smells like a new shower curtain - you don't wanna use those flips ! Bottom line, forget the Beilstein test.[/QUOTE]
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