How Accurate is Portable XRF Compared to Fire Assay for Gold …
A very common question we receive from folks in the precious metals business is about the accuracy of portable XRF technology.. Pawn shops, jewelers, and cash-for-gold operations need to accurately assess if a piece of jewelry is made of real gold and precious metals or if it's alloyed with other metals, and more importantly, the percentage of the precious …
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