Upgrade your gold and silver assay process with our #7A fire assay cupels. With the cupellation process, our magnesium oxide cups remove impurities and oxidize base metals for precise precious metal analysis. Each pack includes 24 cups for optimal gold and silver refinement.
Each cupel removes impurities through precise oxidation, producing a pure gold or silver button or bead. Assay your metals with confidence and maximize your profits with these professional-grade cupels.
