1: bottle PuriTEST Platinum Testing Solution 1: 2x2" PuriTEST PRO Test Stone When testing items said to be Platinum: Scratch or rub the metal you are testing onto the stone. Scratch hard enough to make a visible streak or mark onto the stone. If the metal is Platinum, the acid will allow the metal to keep its' bright white color. If your item is not Platinum, the acid will dissolve the metal.
PuriTEST Platinum Acid Testing Solution
1/2oz bottle excellent for hundreds of tests!
2x2" PuriTEST PRO Test Stone