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Anyone Have Tips On XRF Rental?

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Pillar of the Community

United States
1912 Posts
 Posted 12/22/2019  12:30 pm Show Profile   Bookmark this topic Add Albert to your friends list Get a Link to this Message Number of Subscribers
There are so many models and sources, has anyone had experience with renting either a handheld or tabletop model? And if so what is best for coins? I have many to test so I am thinking about one week rental would do it. The very first coin I would test is a counterfeit Saxony 1/12 Thaler dated 1704. The seller claims it is brass, but the specific gravity test does not support that. Machines are too expensive to buy, so a one week rental seems about right to test several hundred coins. I know I can mail a coin to be tested, but I have too many to do that.
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Spence's Avatar
United States
34397 Posts
 Posted 12/22/2019  5:08 pm  Show Profile   Bookmark this reply Add Spence to your friends list Get a Link to this Reply
Let me offer a different pathway. Can you make friends with a materials science professor at the local university and gain a couple hours of access for a small grant to the department?
"If you climb a good tree, you get a push."
-----Ghanaian proverb

"The danger we all now face is distinguishing between what is authentic and what is performed."
-----King Adz
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gidjit's Avatar
Canada
1980 Posts
 Posted 12/22/2019  5:45 pm  Show Profile   Bookmark this reply Add gidjit to your friends list Get a Link to this Reply
there is a moderater here that ussually in the canadain coins section SPP ottawa,he has access to xrf and knows alot about it you might want to talk to him for any tips or pointers , he has tested many coins for mebers here
Pillar of the Community
United States
1912 Posts
 Posted 12/22/2019  6:49 pm  Show Profile   Bookmark this reply Add Albert to your friends list Get a Link to this Reply
Thanks for the replies.
I did learn some things about my project: 1) I can visit a precious metals dealer a couple hours away and pay him for his time using his tabletop machine, but I would have to limit the coins to cover only a couple hours usage. At $300 cost, I may settle for that and pick & choose which coins are most troublesome for me to detect on my own.
2) Inquiry to Notre Dame went unanswered, I may have to visit to present my subject directly. The idea of a grant is interesting in exchange for testing and giving me my wanted data.
3) From what I can tell, I do not know if I can get get a printed slip showing the scan results from the machines I have looked at. I see some of these only display results on a screen after testing. I'd need to have a lot of coins all sorted & numbered so I can add a printed copy for each coin after each coin was scanned. Then I could post-process the data applying it to each worksheet for the subject coins.
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BStrauss3's Avatar
United States
4589 Posts
 Posted 12/23/2019  08:23 am  Show Profile   Bookmark this reply Add BStrauss3 to your friends list Get a Link to this Reply
Re #3, use a cell phone camera to document the results.


Photo the coin
Photo the readout of the machine
Photo the coin (again)

That way you have an unambiguous sequence from the date/time stamps
-----Burton
50+ year / Life / Emeritus ANA member (joined 12/1/1973)
Life member: Numismatics International, CONECA
Member: TNA, FtWCC, NETCC, EveryCountry (online) coin club
Owned by three cats and a wife of 40+ years (joined 1983)

Author: 3rd Edition of the Sample Slabs book, https://www.sampleslabs.info/
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tdziemia's Avatar
United States
7936 Posts
 Posted 12/23/2019  09:57 am  Show Profile   Bookmark this reply Add tdziemia to your friends list Get a Link to this Reply
I've rented a Thermo Fisher Niton XL2 model handheld for a non-numismatic use (measurement of metal content in plastics), but it was a while ago (8 years). It's easy to use, and I am not sure if it is standard with the rental, but you can get a stand that more or less turns it into "tabletop." You can find the specifications online https://www.thermofisher.com/us/en/...n-guide.html I am guessing it would also work for coins, but you could inquire about that, and I would make sure I had some reference materials of known composition to use as standards.

Also, having read a few of the threads where SPPOttawa commented on XRF, it sounds like this would be your best source of advice for numismatic applications.

Whichever way you decide to go, good luck!

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