Purchase a replacement gold testing acid bottle when you run out of testing chemicals. Used to test gold jewelry and watches.
JSP 18K Gold, Silver, Platinum Jewellery Testing Acid Solution
Large gold and silver testing stone that is dark and shows results clearly. Precious metal acid testing stone should serve you for hundreds of chemical tests. Purchase this natural gold testing stones when you need a new high quality surface for your testing chemicals. Used when using test acids for gold jewelry and watches.
Natural Gold Testing Stone Acid Test Gold Platinum and Silver 4 x 2 x 1/4 Inches | Esslinger
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