Fire Assay Cupel Multiple Sizes 96% MgO High PbO Absorption for Gold Assay Product Introduction Y&X fire assay cupels are engineered for the cupellation stage of gold, silver, and precious metal analysis. Manufactured from 96% magnesium oxide with a specialized fluxing agent formulation, these cupels feature smooth surfaces, uniform shapes, and exceptional mechanical strength. During cupellation, the porous cupel efficiently absorbs molten lead oxide (PbO), while gold and
Fire Assay Cupel Multiple Sizes 96% MgO High PbO Absorption for Gold Assay Product Introduction Y&X fire assay cupels are engineered for the cupellation stage of gold, silver, and precious metal analysis. Manufactured from 96% magnesium oxide with a specialized fluxing agent formulation, these cupels feature smooth surfaces, uniform shapes, and exceptional mechanical strength. During cupellation, the porous cupel efficiently absorbs molten lead oxide (PbO), while gold and