Electronic Gold Tester

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I have a Mizar24... but I trust better the stone!
http://goldrefiningforum.com/phpBB3/viewtopic.php?f=56&t=11416&p=113531&hilit=gold+alloy#p113531

Take care!
Phil
 
the mizars are expensive and no good I agree with poster above until you are ready to throw 15k+ on a spectrum machine stick with acid and stone.. preferable the natural stone its takes about 5 microns more per stroke limiting the chances of you being lazy and getting gf to test as gold
 
> "Does anyone know or have experience with these systems?"
I don't have experience with it but I have some idea of the physics behind it.

> "I'd be interested in purchasing one if they are reliable, accurate [...]"
First, Electronic Gold Testers don't detect whether a sample is made of gold or not. It measures the electromotive force (EMF) generated between the sample and a pure gold electrode. For a pure gold sample this will be precisely 0 volts.
Unfortunately, there are some alloys that would closely resembles the EMF of gold and could mislead the Electronic Gold Tester. I'm not sure which those alloys would be, but my guess is that a visual inspection (colorimetry) of the sample interior would be necessary.
Because of that, I don't recommend relying solely on electronic gold testers.

If anyone else is interested in non-destructible tests for gold, take a look also at Ultrasonic and Eddy Current test:
http://goldrefiningforum.com/phpBB3/viewtopic.php?f=41&t=21303

Regards
 
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