Re: How to identify silverly-colored metal?

> Where did you get the candies from?  Directly from India or from a company
> that imported them from India (and maybe did testing)?

Brought by family straight from India last week...

>
>
> Based on a quick google search (Wikipedia being down is actually a pain...)
>
> http://www.howtotestsilver.com/
>
> Place a drop of acid on the object to be tested.
> 90 to 100% silver, the acid will show a creamy color.
> 77-90% silver, the acid turns a gray color.
> 65-75% silver, then the acid will show a light green color.
>

Hmm, no indication of what the contamination is though. :/

>
> I knew silver and copper reacted with nitric acid, but didn't know the color
> differences that corresponded to varying purities.
>
> http://www2.uni-siegen.de/~pci/versuche/english/v44-24-2.html
>
>
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--
Nathan McCorkle
Rochester Institute of Technology
College of Science, Biotechnology/Bioinformatics

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