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Cement Cupel :
1. Made of cement.
2. Used for smelting and assaying.
3. High thermal shock resistance.
During cupellation, the lead is oxidized to litharge (PbO), most of which is absorbed by the cupel. Gold, silver, platinum and other precious metals form a bead in the cupel.
The bead is subsequently treated to determine its precious metal content. Cupels are typically made from magnesia MgO ( sometimes mistakenly referred to as magnesite), bone ash, Portland cement and other materials.
Typical cupellation furnace temperatures in gold and silver assays are 900-1000°C, but can vary with technique, air flow volume and cupel material.
Cupellation is the last and most important step of the fire assaying process and as such, the quality of the cupels is extremely important.
Available sizes are: 6A, 7A, 7AS, 7AL, 8A and 9.
Customized sizes and services are also available.
QINGDAO YOSION LABTECH CO., LTD. is a laboratory
service provider which devotes to R&D, production, sales and service.
main business is automated sampling & preparation system, sample preparation
equipment, containerized laboratory, fire assay equipment & consumable etc.
Our products are mainly used in major ports, entry-exit inspection system,
research institutes, steel mills, mining companies, independent detection
institutions and so on. We have started global business expansion pace by
exporting our independent R&D products to our partners and customers all
over the world and planning to set up offices in Australia and Brazil.
years of operation, we have established strategic partnership with some leading
brands in Australia, United States, Germany, Canada and Brazil and have been
authorized as general agent which is responsible for sales and service in
We believe in the philosophy of winning market by quality, obtaining
development by innovation and building brand by trustworthiness. So we devote
ourselves to promoting innovation and development of modern laboratory equipment
and creating safe, efficient and comfortable working environment for laboratory
Our first-class product quality and superb technical service have
won our customers' consistent high praise. Now we are working with domestic and
foreign scientific institutions to design and produce humane, intelligent and
modular laboratory equipments. Nowadays Yosion's staff adhere to the principle
of "proactivity, unity, factualism and rigorousness" and keep exploring and
innovating and dedicate to provide the most cost-effective products,
high-efficiency sample preparation project and meticulous
>> 1.Are you a factory or a trading company?
1.We are a factory focused on rigging hardware over 8 years.
2.Our main business is automated sampling & preparation system, sample preparation equipment, containerized laboratory, fire assay equipment & consumable etc.
3.We have numerous distributors at home and board.
>> 2.How do you control your quality?
1.Production process standardization, process standardization, refinement.
2.100% Finished Product Testing.
3.The third party product inspections are acceptable.
4.ISO Quality Management System Certificated Factory ,Can according to customer's requirement customize.
5.Inspection before loading
>> 3.What are your advantages compared with others?
1.Owned factory, the same quality product, the best price.
2.Timely Delivery with the support.
3.Numerous Patents in Rigging Hardware.