HOW TO USE GXL- NEXT
This instructional video shows how to test Gold and Silver using our most popular Tester.
HOW TO USE GXL-24
This in-depth video shows how to use this Gold Tester and the aftercare.
HOW TO USE GT-3000 GOLD TESTER
This video shows you how to use the GT-3000 Gold Tester to test a piece of gold or platinum jewelry to identify or verify the purity of the precious metal.