Gold bars and silver bullion are being counterfeited to permit density and XRF tests. Ultrasound provides the technology to conclusively detect bullion fraud.
- https://testyourgold.com/a-guide-to-testing-gold-silver-and-fakes/
-
Gold bars and silver bullion are being counterfeited to permit density and XRF tests. Ultrasound provides the technology to conclusively detect bullion fraud.
- Australia