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  2. Suction filtration - Wikipedia

    en.wikipedia.org/wiki/Suction_filtration

    Filtration is a unit operation that is commonly used both in laboratory and production conditions. This apparatus, adapted for laboratory work, is often used to isolate the product of synthesis of a reaction when the product is a solid in suspension. The product of synthesis is then recovered faster, and the solid is drier than in the case of a ...

  3. Filtration - Wikipedia

    en.wikipedia.org/wiki/Filtration

    This is done to prevent crystal formation in the filter funnel and other apparatus that come in contact with the solution. As a result, the apparatus and the solution used are heated to prevent the rapid decrease in temperature which in turn, would lead to the crystallisation of the solids in the funnel and hinder the filtration process. [4]

  4. Büchner funnel - Wikipedia

    en.wikipedia.org/wiki/Büchner_funnel

    A Büchner funnel is a piece of laboratory equipment used in filtration. [1] It is traditionally made of porcelain, but glass and plastic funnels are also available. On top of the funnel-shaped part there is a cylinder with a fritted glass disc/perforated plate separating it from the funnel.

  5. Laboratory funnel - Wikipedia

    en.wikipedia.org/wiki/Laboratory_funnel

    These are used in filtration under low pressure with a Buchner flask. [2] Hot filtration funnel is a less commonly seen funnel where the funnel is jacketed, and surrounded by a heated fluid. [3] Eco funnel is equipped with a latching lid and gasket to reduce chemical contamination and conform to OSHA and EPA regulations. [4]

  6. Filter funnel - Wikipedia

    en.wikipedia.org/wiki/Filter_funnel

    A filter funnel is a laboratory funnel used for separating solids from liquids via the laboratory process of filtering. [1]In order to achieve this, a cone-like shaped piece of filter paper is usually folded into a cone and placed within the funnel.

  7. Büchner flask - Wikipedia

    en.wikipedia.org/wiki/Büchner_flask

    During filtration, the filtrate enters and is held by the flask while the residue remains on the filter paper in the funnel. The Büchner flask can also be used as a vacuum trap in a vacuum line to ensure that no fluids are carried over from the aspirator or vacuum pump (or other vacuum source) to the evacuated apparatus or vice versa.

  8. Gravity filtration - Wikipedia

    en.wikipedia.org/wiki/Gravity_filtration

    Gravity filtration is often used in chemical laboratories to filter precipitates from precipitation reactions as well as drying agents, inadmissible side items, or remaining reactants. While it can also be used to separate out strong products, vacuum filtration is more commonly used for this purpose.

  9. List of purification methods in chemistry - Wikipedia

    en.wikipedia.org/wiki/List_of_purification...

    The pure solid crystals are then separated from the remaining liquor by filtration or centrifugation. Recrystallization : In analytical and synthetic chemistry work, purchased reagents of doubtful purity may be recrystallised, e.g. dissolved in a very pure solvent, and then crystallized, and the crystals recovered, in order to improve and/or ...

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