Büchner Funnel – Porcelain Laboratory Vacuum Filtration Funnel

The Büchner Funnel is a laboratory filtration device designed primarily for vacuum-assisted filtration and separation of solid materials from liquids. It is commonly used together with filter paper, a vacuum/filter flask and an appropriate vacuum source to achieve faster filtration than conventional gravity filtration. A traditional Büchner funnel has a cylindrical upper chamber, flat perforated plate and tapered stem. Filter paper is positioned over the perforated plate, while vacuum applied through the filtration flask draws liquid through the filter, leaving the solid material on the filter paper. Porcelain versions provide a rigid, durable surface and good resistance to many laboratory chemicals. Büchner funnels are widely used in chemistry, pharmaceutical, research, educational and industrial laboratories for filtration, precipitate collection and sample preparation. Key Features Designed for vacuum filtration Flat perforated filtration plate Cylindrical upper chamber Tapered stem Used with laboratory filter paper Suitable for solid-liquid separation Speeds up filtration compared with gravity filtration Reusable Easy-to-clean surface Available in different diameters and capacities Suitable for routine laboratory filtration