{"product_id":"lot-of-6-10-mabor-cupel-2-3-8-gold-assay-smelting-refining-melting-cupels","title":"Lot of 6 - # 10 Mabor Cupel 2-3\/8\" Gold-Assay-Smelting-Refining-Melting-Cupels","description":"\u003ch3\u003eLot of 6 - # 10 Mabor Cupel 2-3\/8\" Gold-Assay-Smelting-Refining-Melting-Cupels\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eLot of 6 Cupels Each Cupel will absorb 102 grams of lead. Cupels are made from\nhigh quality dead burnt magnesia (MgO). Hard, smooth surface with consistency\nin weight and size. Provide exceptional results in gold mines, precious metal\nrefiners, alloy melters, hallmarking, geological and test laboratories\nworldwide. CUPEL DIMENSION is 2-3\/8\" across the top \u0026amp; 1-3\/16\" tall The lead\nbutton for cupellation is typically generated in the crucible fusion from the\nfire assay process, but can also be produced by a scorification assay, or a\nbullion assay where the precious metal is wrapped in lead foil. Typical\ncupellation furnace temperatures in gold and silver assays are 1650-1700F, but\ncan vary with technique, air flow volume, and cupel material.\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n  \u003cul class=\"a\"\u003e\n         \u003cli\u003eLot of 6 Cupels\u003c\/li\u003e\n         \u003cli\u003eEach Cupel will absorb 102 grams of lead\u003c\/li\u003e\n  \u003c\/ul\u003e","brand":"Make Your Own Gold Bars","offers":[{"title":"Default Title","offer_id":58175707218080,"sku":"B074CPGYW1","price":249.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0418\/7134\/3776\/files\/B074CPGYW1.jpg?v=1784004030","url":"https:\/\/dingoship.com.au\/products\/lot-of-6-10-mabor-cupel-2-3-8-gold-assay-smelting-refining-melting-cupels","provider":"DingoShip AU","version":"1.0","type":"link"}