Message:

<p>[QUOTE=&quot;GDJMSP, post: 3362308, member: 112&quot;]Rinse spotting. When a coin is dipped sometimes particulates of the matter being removed become suspended in the dip solution. If, when you are removing the coin from the dip you tilt it slightly, most of the dip solution and any suspended particulates will simply run off - but not necessarily all will. And you kind of need to realize that this all happens in about the span of 1 second.</p><p><br /></p><p>Anyway, once the dip is completed you&#039;re not finished, you then have to rinse the coin in a neutralizing agent - something that neutralizes the dip itself so that any remaining traces of it cannot continue to act on the metal. Leaving droplets on the coin, trapped in the recesses or even on the open fields, can result in what I would refer to as ghost spotting - spots that are of a lighter color or different shade than the surrounding metal. This occurs because the solution has had a longer time to work on the metal in those specific spots.</p><p><br /></p><p>But there are also those cases where dark particulates in the solution can settle on the coin when it is removed. And unless they are immediately rinsed away they will stay there - effectively leaving behind dark spots on the coin.</p><p><br /></p><p>Both of these things can accurately be referred to as rinse spotting.</p><p><br /></p><p>As for the coin above, the &#039;28 Peace, that is not rinse spotting in my opinion, merely the result of a dip not done correctly. What we see on that coin are what I refer to as leftovers - dark coloration that simply was not removed by the dip. There can be a couple of different causes, the dip was diluted too much, the coin was not held correctly when dipped, or it was pulled out too soon, too quickly.</p><p><br /></p><p>Normally a coin should only be dipped for about 1 second - depending on which specific dip you are using of course. But if and when you begin diluting the dip, that all changes and the time period can only be determined by repeated experimentation.</p><p><br /></p><p>But sometimes, even when a coin is dipped correctly, there can still be isolated dark colored spots left behind on the coin - these too are leftovers. But had you left the coin in even 1 second longer, or you repeated the dip, so that those tougher spots were removed - you would ruin the rest of the coin. So sometimes you have to be happy with leftovers. This is what makes them so common. It is also why some incorrectly identify them as rinse spotting when they are not rinse spotting at all. But make no mistake, both do exist, it&#039;s just sometimes hard to tell one from the other. And in fact sometimes you can&#039;t.[/QUOTE]</p><p><br /></p>

Your name or email address:

Do you already have an account?

• No, create an account now.
• Yes, my password is:
• Forgot your password?

Stay logged in