Collections: Gold testers (precious metal testers, replacement bottles, accessories)

The expression, "The acid test" (meaning the ultimate proof) comes from the acids used for testing precious metals. The QUICKTEST 3 tests for gold (all carats) and silver; the TROYTESTS test gold, silver, platinum, Palladium and steel. 

Professionals who use an electronic gold tester for yellow gold will also use acids for testing silver and platinum. Some traders say, "Oh, I don't bother with those!"  If you're buying yellow gold, why miss out on making a profit on white metals?