Lot of 6 - # 10 Mabor Cupel 2-3/8" Gold-Assay-Smelting-Refining-Melting-Cupels

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Lot of 6 - # 10 Mabor Cupel 2-3/8" Gold-Assay-Smelting-Refining-Melting-Cupels

Regular Price: US$94.99

Special Price US$74.99

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Category: Arts & Crafts & Sewing Beading & Jewellery-Making Jewellery Casting Supplies Casting Tools

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Lot of 6 Cupels Each Cupel will absorb 102 grams of lead. Cupels are made from high quality dead burnt magnesia (MgO). Hard, smooth surface with consistency in weight and size. Provide exceptional results in gold mines, precious metal refiners, alloy melters, hallmarking, geological and test laboratories worldwide. CUPEL DIMENSION is 2-3/8" across the top & 1-3/16" tall The lead button for cupellation is typically generated in the crucible fusion from the fire assay process, but can also be produced by a scorification assay, or a bullion assay where the precious metal is wrapped in lead foil. Typical cupellation furnace temperatures in gold and silver assays are 1650-1700F, but can vary with technique, air flow volume, and cupel material.

Each Cupel will absorb 102 grams of lead. Lot of 6 Cupels.

Date First Available: July 28, 2017. Is Discontinued By Manufacturer: No. Best Sellers Rank: #91,189 in Arts, Crafts & Sewing. Customer Reviews: 3.9 out of 5 stars 34 ratings 3.9 out of 5 stars. Item model number: Lot of 6 - # 10 Mabor. : B074CPGYW1. Manufacturer: Make Your Own Gold Bars. Item Weight: 2.25 pounds. Package Dimensions: 8.86 x 3.39 x 3.31 inches.