A Buchner funnel (Büchner funnel) is a funnel used in laboratory settings for filtration. Typically they are created from porcelain, but are also available in glass and occasionally in plastic.

Inside this funnel end of there is a fritted glass disc. This is can be used to support a filter, such as a whatman filter, but is suitable for use as is. This disc is used to filter out particulate and sediment from liquids poured into the top. The stem at the bottom of the funnel can be placed into a receiving vessel to receive the filtrate.

Often times Buchner funnels are used in conjunction with filter flasks and an aspirator pump in order to draw the liquid through the funnel faster, rather than relying on gravity to do the work, which accelerates the filtration process by several orders of magnitude.

Fritted Disc Funnel Specifications:

– Made of borosilicate glass
– Available in multiple sizes

Also available with a 24/29 joint.

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