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All Forums Category: General Numismatic Forums Forum: Precious Metals and Bullion - Gold, Silver, Copper, Platinum

Testing For Platinum?

 
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Author Previous TopicReplies: 4 / Views: 201Next Topic  
Lancek
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United States
392 Posts
 Posted 02/28/2021  10:22 am Show Profile   Check Lancek's eBay Listings Bookmark this topic Add Lancek to your friends list Get a Link to this Message
I know there are meters that can test for gold. But I've heard that they don't work for silver. How about platinum? Is there any way to test to see if something is platinum, and if so, how pure?
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sbr
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Canada
68 Posts
 Posted 02/28/2021  4:02 pm  Show Profile   Bookmark this reply Add sbr to your friends list Get a Link to this Reply
I sold some palladium a little bit ago and the buyers machine was able to check the purity. The same machine checked gold and platinum .I don't know for sure but I think it also tested silver.
sel_69l
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Australia
18383 Posts
 Posted 02/28/2021  4:49 pm  Show Profile   Bookmark this reply Add sel_69l to your friends list Get a Link to this Reply
XRF is OK for testing the surface down to a depth of only 5 microns.
Beware, however.
Pt an W** are of approximately the same density, so XRF testing inconclusive for Pt plated W.

**W = Wolfram, otherwise known as tungsten.
macmercury
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 Posted 02/28/2021  5:48 pm  Show Profile   Bookmark this reply Add macmercury to your friends list Get a Link to this Reply
Barely scratch the surface if the conversion is right from Google.

5 micron = 0.00019685 inch.

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sel_69l
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Australia
18383 Posts
 Posted 02/28/2021  10:10 pm  Show Profile   Bookmark this reply Add sel_69l to your friends list Get a Link to this Reply
You need industrial X-Rays for getting into the core of the bullion bar ingot or coin.
XRF = X-Ray Florescence is an entirely different investigative technique. A bullion dealer is very likely to have an XRF hand held instrument.
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All Forums Category: General Numismatic Forums Forum: Precious Metals and Bullion - Gold, Silver, Copper, Platinum
 
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