Cupels-cs ceramic co.,ltd

Cupels. ¡ª A cupel is a porous cylinder or inverted-cone frustum of refractory material with a cupped depression in the upper end for retaining the lead button. In modern practice, cupels are made of bone ash, cement, bone-ash-cement mixtures, or magnesia. Magnesia cupels are purchased as a finished product, but the others are usually made at the assay office

magnesium oxide and bone ash cupels	magnesium oxide and bone ash cupels	Magnesium sand cupel	Ceramic Couple
Plate cupel	Fire assay cupel	magnesia boat crucible	magnesium oxide crucible

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