cupel

A small, porous bowl, typically made from bone ash, used in the assaying process to separate precious metals like gold or silver from base metals such as lead.

• 🇵🇹Pequeno recipiente poroso, geralmente feito de cinzas de ossos, usado no processo de copelação para separar metais preciosos, como ouro ou prata, de metais básicos, como o chumbo.

1. Assaying vessel C2 formal scientific

   A small, porous cup made of bone ash or similar material, used in the process of cupellation to separate precious metals like gold and silver from base metals such as lead.

   • The assayer placed the lead button containing the gold into the heated cupel.
   • Bone ash cupels are essential for accurate fire assay analysis.
   • The impurities were absorbed by the porous cupel, leaving a pure silver bead.

   🇵🇹Copela para ensaio por via seca

   Sinônimos: test

• cupels plural form
• cupels' possessive plural form
• cupel's possessive singular form