From Wikipedia, the free encyclopedia.
In chemistry, a crucible is a kind of laboratory apparatus that is usually a cup, made of porcelain or an inert metal, used to heat chemical compounds to very high temperatures. One of the earliest uses of platinum was as a material in crucibles, and metals such as nickel and zirconium are used as crucible materials these days.
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See also: The Crucible (play) and Crucible Theatre.
