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  2. Crucible - Wikipedia

    en.wikipedia.org/wiki/Crucible

    Crucibles used in Czochralski method Melting gold in a graphite crucible Three crucibles used by Thomas Edison. Crucibles are used in the laboratory to contain chemical compounds when they are heated to extremely high temperatures. Crucibles are available in several sizes and typically come with a correspondingly-sized lid. [20]

  3. Pipeclay triangle - Wikipedia

    en.wikipedia.org/wiki/Pipeclay_triangle

    A pipeclay triangle is a piece of laboratory apparatus that is used to support a crucible being heated by a Bunsen burner or other heat source. It is made of wires strung in an equilateral triangle on which are strung hollow ceramic, normally fire clay, tubes. The triangle is usually supported on a tripod or iron ring.

  4. Crucible tongs - Wikipedia

    en.wikipedia.org/wiki/Crucible_tongs

    Since crucible tongs work with the crucible, one must know the safety procedures of the crucible. Before using the crucible, make sure that it is dry; Fill the crucible with sample chemicals to only 1/2 or 2/3, do not fill until it is full; If the user used the crucible to fuse the glass, waiting for the crucible to cool down before cleaning it

  5. Gooch crucible - Wikipedia

    en.wikipedia.org/wiki/Gooch_crucible

    A Gooch crucible, named after Frank Austin Gooch, [1] is a filtration device for laboratory use (and was also called a Gooch filter [2]). It is convenient for collecting a precipitate directly within the vessel in which it is to be dried, possibly ashed , and finally weighed in gravimetric analysis .

  6. Watch glass - Wikipedia

    en.wikipedia.org/wiki/Watch_glass

    A watch glass is a circular concave piece of glass used in chemistry as a surface to evaporate a liquid, to hold solids while being weighed, for heating a small amount of substance, and as a cover for a beaker. When used to cover beakers, the purpose is generally to prevent dust or other particles from entering the beaker; the watch glass does ...

  7. Evaporating dish - Wikipedia

    en.wikipedia.org/wiki/Evaporating_dish

    Crucible An evaporating dish is a piece of laboratory glassware used for the evaporation of solutions and supernatant liquids, [ a ] and sometimes to their melting point . Evaporating dishes are used to evaporate excess solvents – most commonly water – to produce a concentrated solution or a solid precipitate of the dissolved substance.