Evaporating dish

a piece of laboratory glassware used for the evaporation of solutions and supernatant liquids, and sometimes to their melting point

An evaporating dish is used to evaporate solutions - that is, to turn them from a liquid state into a gaseous (gas) state. They are often made from ceramics.[1]

References

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  1. "evaporating dish - Definition of evaporating dish in English by Oxford Dictionaries". Oxford Dictionaries - English.[permanent dead link]