RANDHAWA GLOBAL Porcelain Buchner Filtration Funnel 120 mm Dia, RG-9002

RANDHAWA GLOBAL Porcelain Buchner Filtration Funnel 120 mm Dia, RG-9002 is a laboratory apparatus used for vacuum filtration, a technique employed to separate a solid precipitate from a liquid in a chemical or biological sample. Named after the German chemist Ernst Büchner, this funnel is a crucial tool in many scientific disciplines, including chemistry, biology, and environmental science.

Key components and characteristics of a Buchner filtration funnel include:

Filtration Flask: The Buchner funnel is typically used in combination with a filtration flask, also known as a Buchner flask. This flask has a sidearm to which a vacuum source can be attached. When a vacuum is applied to the flask, it creates suction, drawing the liquid through the funnel and leaving the solid material behind on the filter paper.

Funnel: The Buchner funnel itself is a cone-shaped funnel made of various materials such as glass, porcelain, or plastic. It has a perforated or porous base, which supports a filter paper or membrane. The filter paper serves as the filtration medium, allowing the liquid to pass through while retaining the solid particles.

Filter Paper: The choice of filter paper depends on the nature of the sample and the desired filtration rate. Filter paper comes in various grades, with different porosities and particle retention capabilities. The filter paper is placed in the funnel and held in place by a vacuum.

Vacuum Source: A vacuum pump or aspirator is connected to the sidearm of the Buchner flask to generate the necessary vacuum for the filtration process. This suction accelerates the filtration process by pulling the liquid through the filter paper and into the flask below.

Common uses of Buchner filtration funnels include:

Precipitate Separation: Buchner funnels are used to separate solid precipitates from liquid solutions in chemical reactions, especially during processes like gravity filtration or vacuum filtration.

Sample Cleanup: They are employed to remove impurities or unwanted particles from a sample, allowing for the isolation of a purified product.

Particle Collection: Buchner filtration is used in environmental science and microbiology to collect particulate matter or microorganisms from air or water samples.

Solid-Liquid Extraction: In chemistry and analytical chemistry, these funnels are used for solid-liquid extractions, where a solvent is used to extract compounds from a solid matrix.

Microbiological Analysis: In microbiology, Buchner funnels can be used for filtering bacterial or fungal cultures to separate cells from the culture medium.

Overall, Buchner filtration funnels are indispensable tools for separating solids from liquids in laboratory settings. They offer efficient and precise filtration methods, making them valuable instruments for a wide range of scientific applications.

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