These tapered cupels are designed to effectively absorb impurities during the refining process. Each cupel removes impurities through precise oxidation, producing a pure gold or silver button or bead.
#8A, 1-3/4 – Magnesium Oxide, Fire Assay Cupel – Gold. Silver Refining | QTY: 6
DOES NOT AFFECT THE CUPEL!!”””. Size O.D of Cup I.D. of Cup Dia of Bottom Height of Cupel Depth of Cup Weight (Approx). 8A D D1 D2 H H1 (grams). mm 45.0 38.0 37.0 35.0 13.0 55.0. As seen in the photo above.
#6A, 1-9/16 – Magnesium Oxide, Fire Assay Cupel – Gold. Silver Refining | QTY: 6
Size Outer Dia Dia of Cup Dia of Bottom Height of Cupel Depth of Cup Weight (Approx). 6A D D1 D2 H H1 (grams). mm 40.0 30.0 30.0 28.0 6.0 35.0.