Definition of "cupels" []

• Plural form of cupel. (noun)

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• "How many of all these old folios round me are like so many old cupels!"
• "There should be no unnecessary handling of the cupels once they have been placed in the muffle."
• "On such cupels a small speck of gold (less than .01 milligram) will be left in a good shape and easily visible; but the cupel must be withdrawn from the muffle as soon as the cupellation is finished to make sure of always getting the button in good condition."