Buchner Funnel - 250 mm (Ceramic)

The 250 mm Ceramic Buchner Funnel is a large laboratory filtration funnel designed for compatible vacuum-filtration setups. Its perforated plate supports appropriately sized filter paper while the funnel body directs filtrate into a compatible receiving vessel. The approximately 250 mm diameter provides a broad filtration surface for applications where smaller Büchner funnels do not provide sufficient area.

The 250 mm Ceramic Buchner Funnel is made from ceramic material and is intended for liquid-solid separation using suitable filter media. During operation, filter paper is placed flat over the perforated plate and wetted or seated as appropriate for the procedure. Applied vacuum beneath the filter can then draw liquid through the paper while retained solids remain above it.

Performance of the 250 mm Ceramic Buchner Funnel depends on filter-paper grade, particle size, liquid viscosity, vacuum level, cake thickness, chemical compatibility, and receiving equipment. Select filter media appropriate for the material being processed. The existing product information identifies hydrochloric acid as incompatible with this funnel, so do not use it with hydrochloric acid.

Inspect the ceramic surface for cracks, chips, or other damage before use. Seat the funnel securely with compatible adapters and receiving vessels, and make sure vacuum glassware is suitable for reduced-pressure operation. Do not use ordinary non-vacuum-rated containers as receiving flasks. Follow appropriate protective procedures for the chemicals and solids being filtered.

Select the 250 mm Ceramic Buchner Funnel for compatible large-surface vacuum filtration. Browse filter paper, glass Büchner funnels, receiving vessels, and related equipment in our Buchner Funnels & Filtration Equipment collection.

Related Products

Buchner Funnel - 200 mm Ceramic. Compare funnel size and material restrictions before selecting.

Frequently Asked Questions

What diameter is listed?
The listing identifies an approximately 250 mm funnel diameter. Confirm the usable filter-support area before choosing paper.

Can I use hydrochloric acid with this funnel?
No. The existing product information identifies hydrochloric acid as incompatible with this funnel.

Can an ordinary storage bottle receive filtrate under vacuum?
Use a receiving vessel documented for reduced-pressure operation, with a compatible adapter and secure support.