Gold& Silver Testing Supplies
Stone used with solutions and test needles to determine karat values.
Economical black glass stone used with solutions and test needles to determine karat values.
Measures: 2″ x 1-1/2″ x 3/16″
Test solution acid for various metals. From 10K-22K gold, silver & platinum. 12 gram bottles.
Natural testing stones are used with solutions and test needles to determine karat values of precious metals.
Natural testing stone in a larger 6″ x 4″ size offers great value and convenience. Use with solutions and test needles to determine the karat value of articles to be tested.
This replacement pen probe (Item #2018) is specifically intended for operating the Auracle Pro (Item #2012) and Auracle Analyzer (Item #2009) Gold & Platinum Testers. The gold color sticker easily identifies this replacement pen.
Needles and item to be tested are rubbed on test stones and treated with acid to determine match.