Technical parameters:

Compressive strength:N/ABending strength:N/A
Thermal shock resistance :N/AMax serve temp:N/A

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Cupels are typically made by magnesia MgO, bone ash, portland cement,and other materials.The lead button for cupellation is typically generated in the crucible fusion from the fire assay process, but can also be produced by a scorification assay, or a bullion assay where the precious metal is wrapped in lead foil.

They are available in a comprehensive range of shapes and sizes to suit most end user requirements. Custom sizes can be supplied by special request.


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