purchasing test acid for 9kt Gold in the US

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sheely213

New member
Joined
Mar 17, 2019
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2
kt I do a lot with vintage and antique jewelry and cannot find a source for the 9kt test acid. The only sources I have found are in the UK and they cannot ship to the US. I am not as sophisticated as many of your users. Wondering if anyone can offer some help?
 
You simply use a known 9k sample along side what you are testing on the touchstone with 10k acid, or whatever you have. Here is a good testing guide;



http://goldrefiningforum.com/phpBB3/download/file.php?id=1765
 

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