For slightly more than the cost of a test acid kit, the ET-18 precisely determines gold karat values equal to or greater than 10K, 14K, and 18K. Pocket sized and battery operated.
TES-174.00 - RS Mizar ET-18 Gold Tester - Jewelry Tools Demo
Et18 RS Mizar Electronic Gold Tester - Gold Testing
gold testing - Star Struck, LLC
GOLD TESTING - Star Struck, LLC
Antique Vintage Estate 18kt Pitcher/jug Charm Pendant With Colored
Berco Jewelry, Item
RS Mizar ET 18 ET-18 Electronic Gold Tester 10k-18k w/ Replacement
Jewelry Testing Supplies - Metal and Gemstone Testing Supplies on
Chemical Kit for ET18 & M18 Mizar Gold Testers - Activator & Electrolyte , 56.798
Et18 RS Mizar Electronic Gold Tester - Gold Testing
Amazing Electronic Gold Tester for iphone and ipad
Mizar