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Cupellation is the last and crucial stage in fire assay process.so,the quality of cupel is very Important .During cupellation,the lead is oxidized to litharge(PbO),most of which is absorted by the cupel.Gold,silver,platinum and other precious metals form a tiny bead in th...Read more »
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Bullion Blocks Cupellation is the last and crucial stage in fire assay process.so,the quality of cupel is very Important .Refractoriness: 1350 ºC (ash blowing temperature is generally not more than 960ºC).Features:1. Multiple samples can be obtained at a time, greatly improvi...Read more »
