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Buchner Funnels

A Buchner funnel is a piece of laboratory equipment used in suction filtration. Our Buchner funnels come in three main varieties: standard (with fixed or removable plates), single piece, and two piece (easy to clean). Buchner funnels are all intended for use below 52° C (125° F) and are suitable for a variety of lab procedures.

  • Standard porous filter plate Buchner funnels are available with medium porosity (45-90 microns) or coarse porosity (90-130 microns). The fixed or removable filter plates are 6.4mm (1/4") thick HDPE with a non-porous circumference to help fasten filter paper to the plate. These Buchner funnels are also available with a punctured filter plate, also HDPE, which is 4.8mm (3/16") thick. Holes are 4.8mm (3/16") diameter on 11mm (7/16") centers. The fixed plate models can be used for coarse filtration or with a cloth or paper filter. A removable filter plate allows easier cleaning and precious metals recovery. All plates are supported by a multiple ring grid to prevent displacement under vacuum. Vacuum connector fitting accepts 12.7mm (1/2") I.D. tubing. The tube fitting is fixed on the 260mm (10.25") funnel and threads into 3/4" diameter NPT bung on all other models.
  • Single Piece Filtering funnels have a welded-in, Fritware® porous polyethylene filter plate (fine, medium or coarse) but can also be used with a filter paper.
  • Two piece Buchner funnels are autoclavable, economical and lightweight. They can be separated for effortless washing.
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CP Lab Safety is a Woman-Owned California Small Business, manufacturer of laboratory safety products and distributor of leading lab supply brands. CP Lab Safety sells lab and industrial safety products including coated bottles, secondary containers, funnels, lab waste handling supplies, safety cabinets, safety cans and general lab supplies, and manufactures Safety ECO Funnel.

ECO Funnel® has revolutionized the way open waste containers are handled at leading pharmaceutical, biotech, industrial, academic and government institutions. Distributors include VWR, Grainger, and Fisher Scientific. We help labs maintain compliance with safety regulations regarding clean air, exposure to hazardous wastes, secondary containment, and fire safety.

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