Magnesia Cupels

Magnesia Cupels

Magnesia Cupel :1. Made of magnesia.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 cup

    Product Details

    Qingdao Yosion Labtech Co.,Ltd is one of the leading magnesia cupels manufacturers and suppliers China, if you are looking for hot sell cheap and low price and high quality, top quality, premium quality, super quality and advanced magnesia cupels from professional factory, dealer and franchiser, please feel free to contact us. And welcome to wholesale high grade and competitive price industrial magnesia cupels, and direct marketing, direct selling and direct distributor products from us, and to check products metallurgy with us.

    Magnesia Cupel :

    1. Made of magnesia.

    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.




    >> 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. 


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    Contact Us

    Qingdao Yosion Labtech Co.,Ltd

    ADD: No.506 South Shanghai Road, Huangdao District(Jiaonan), Qingdao City

    Phone: +8618266641751

    Phone: +86-532-83978550

    fax: +86-532-83978550


    Skype:  /

    Tel: +86-532-83978550
    Address: No.506 South Shanghai Road,Huangdao District(Jiaonan),Qingdao City,Shangdong,China