| The lead alloy was then separated into its component metals by cupellation. |
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| During cupellation, osmium and ruthenium are partly volatilised and iridium is partly absorbed by the cupel. |
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| The precious metals assay by cupellation is the most ancient and most used method for the analysis of precious metals. |
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| This 7.6 m long module houses three Mines Assay GLO-BAR Electric furnaces, two for fusion and the other for cupellation. |
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| If platinum, palladium, or rhodium are present, they dissolve in the molten lead and are collected in the gold-silver bead after cupellation. |
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| Lead was removed from the silver by cupellation, a process of great antiquity in which the alloy was melted in a shallow porous clay or bone-ash receptacle called a cupel. |
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| Clearer information is needed on the deposits worked, and the factors leading to the occurrence of native silver which provided the principal source of the metal prior to the introduction of cupellation. |
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| The analysis laboratory is provided with cupellation furnaces, furnaces for ash analysis and equipments for acid partition to remove the noxious substances produced. |
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| The situation changed with the discovery of cupellation, a technique that allowed silver metal to be extracted from its ores. |
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| So the primary production of silver requires the smelting and then cupellation of argentiferous lead ores, a historically important process. |
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