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.