cupel

/kyoo-puhl, kyoo-pel/US // ˈkyu pəl, kyuˈpɛl //UK // (ˈkjuːpəl, kjʊˈpɛl) //

杯状物,杯子,杯具,杯状体

Definitions

n.名词 noun

1
- : a small, cuplike, porous container, usually made of bone ash, used in assaying, as for separating gold and silver from lead.
- : a receptacle or furnace bottom in which silver is refined.

v.有主动词 verb

1
cu·peled, cu·pel·ing or cu·pelled, cu·pel·ling.
- : to heat or refine in a cupel.

Before removing the piston, turn it half-way round upon its axis so as to loosen and smooth the face of the cupel.
A conveniently sized cupel is 1-1/4 inches in diameter and about 3/4 inch high.
The cavity of the cupel is about 1/4 inch deep, and something of the shape shown in fig. 5.
Silver remains after cupellation in flattened elliptical buttons, adhering but only slightly to the cupel.
Another possible source of loss is the infiltration of small particles of alloy into the cupel.