Lab Equipment Ceramic Buchner Funnel, Filter FunnelA buchner funnel (Büchner funnel) is a piece of laboratory equipment used in filtration. 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. The Hirsch funnel has a similar design; it is used similarly, but for smaller quantities of material. The main difference is that the plate of a Hirsch funnel is much smaller, and the walls of the funnel angle outward instead of being vertical.ModelOutside diameter(mm)Tube diameter(mm)Total height(mm)Bowl height(mm)Perforation diam(mm)Perforation number120104515219240127025237350168025237360141103626148018140482.391410022160552.3127512025190622.3169613032190652123715034230752.9217818040250802.5212920039275902.933110250483201102.946911300603851403.6547
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