Purchase Qty. Reference FOB Price
1,000-9,999 Pieces US$0.18
10,000-197,999 Pieces US$0.17
198,000+ Pieces US$0.16
Product Description
Product Description Cupellation is the last and most important step in fire assay process and as such, the quality of cupel is extremely crucial. During cupellation, the lead is oxidized to litharge (PbO), most of which is absorbed by the cupel. Gold, silver, platinum and other precious ...