Selecting the appropriate Buchner funnel is critical for effective and efficient laboratory filtration processes. The right choice ensures optimal separation, prevents contamination, and enhances experimental accuracy. Understanding the key characteristics and applications of these essential lab tools is paramount for achieving reliable scientific results.
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Discover now our comparison of the best Lab Buchner Funnels. It is never easy to choose from the wide range of offers. On the market, you will find an incalculable number of models, all at different prices. And as you will discover, the best Lab Buchner Funnels are not always the ones at the highest prices! Many criteria are used, and they make the richness and relevance of this comparison.
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- 2 PARTS || Büchner funnel with straight sides, two interlocking parts and a perforated filter plate is made of high quality polypropylene
- SEPARATION || For use in filtration (separation of solid matter and fluid) - Two parts combine forming a vacuum seal which does not require greasing
- USE 11 - 12.5CM FILTER PAPER || Filtration paper required but NOT included - Best with 11 to 12.5cm filter paper - Moisten filter paper with a liquid to prevent initial leakage
- MEASUREMENTS || Funnel stem measures 85mm (3.3 inches) with an inner diameter of 20mm (0.8 inches) - Fully assembled funnel measures 210mm (8.25 inches) in length with an inner diameter of 130mm (5.1 inches)
- MULTIUSE || Often used in combination with a Büchner flask (CH0422C01), Büchner ring and sinter seals
- Premium Material: Crafted from high-quality borosilicate glass ensuring durability and resistance to thermal shock; features uniform wall thickness and high transparency with no bubbles.
- Optimal Capacity: Includes a 250ml Buchner funnel and a 1000ml filter bottle, perfect for handling substantial volumes in various scientific and industrial applications.
- Efficient Filtration: Designed for superb filtration without the need for filter paper, with a maximum nominal filtration size of 15-40 μm, ensuring precise and clean results.
- Versatile Uses: Suitable for a wide range of applications including scientific research, the medical and chemical industries, teaching, distillation, and soap making.
- Reliable Support: Backed by a quality guarantee and round-the-clock customer service with professional, friendly staff ready to assist with any queries or issues.
- High Temperature Resistant: These flasks are made of industrial quality borosilicate 3.3 glass, which can withstand high temperature and thermal shock.
- With Sidearm: Funnel vacuum seal adapter, 1000 ml 1 liter thick wall borosilicate glass filter thermos with sidearm.
- Standard Graduation: Clear standard scale, easy to read.
- Easy to Use: Dishwasher safe. Perfectly matched Buchner funnel and filter flask set.
- Package Includes: 1000ML Buchner funnel kit, 80mm Buchner porcelain ceramic funnel, with 1 connected rubber plug.
- High Quality - Made of high quality Porcelain, it is stable, durable and will not softening.
- Size - The outer diameter of this funnel is 100mm.
- Design - It has the fixed perforated plate for easy filtration.
- Stable - It will has the excellent resistant when it meet acids and alkalis, which make it wide use in lab.
- With fixed perforated plate
- Glazed on inner and outer surface with exception of rim
- 100mm outer diameter, 87mm inner diameter
- Excellent resistance to acids and alkalis
- Warranty: StonyLab 1-year limited warranty; if received damaged, please contact us immediately; we will solve it until satisfied
- High Quality - Made of high quality Porcelain, it is stable, durable and will not softening.
- Size - The outer diameter of this funnel is 120mm.
- Design - It has the fixed perforated plate for easy filtration.
- Application - It will has the excellent resistant when it meet acids and alkalis, which make it wide use in lab.
- High Quality - Made of borosilicate glass, it has the advantage of excellent physical and chemical resistant.
- Medium Frit - The Pore Size is G2, which max. size is 40~80 μm.
- Specification - The inner diameter is 94mm with the 24/40 standard joint.
- Capacity - The capacity is 500ml.
- Made of high-quality ceramic material. Compatible with laboratory equipment. Available in various sizes: 60mm, 80mm, 100mm, 120mm, and 150mm. Durable and long-lasting. Easy to clean and maintain.
- 9 count filter adapter cones set,suitable for different sizes of experimental apparatus.
- Made of vulcanized rubber with good elasticity and smooth and durable surface.
- It can be used alone or nested with adjacent sizes,minimize the risk between funnel flasks.
- The Buchner funnel flask adapter is used for filter components and can be used with Buchner funnel and Buchner flask.
- Note: Keep these rubber filter cartridges away from hydrofluoric acid to avoid corrosion.
- Made of high-quality ceramic material. Compatible with laboratory equipment. Available in various sizes: 60mm, 80mm, 100mm, 120mm, and 150mm. Durable and long-lasting. Easy to clean and maintain.
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Last update on 2026-03-22 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Lab Buchner Funnels
Material Considerations
Buchner funnels are commonly available in porcelain, glass, and polypropylene. Each material offers distinct advantages for specific laboratory needs:
- Porcelain: Highly durable, resistant to most chemicals (except hydrofluoric acid), and excellent for high-temperature applications. Its robust nature makes it a staple in many chemistry labs.
- Glass: Offers superior chemical resistance and allows for clear visual inspection of the filtration process. Borosilicate glass is preferred for its thermal shock resistance, making it suitable for a wider range of temperatures.
- Polypropylene: A lightweight and shatter-resistant option, ideal for general-purpose filtration and educational settings. It is more cost-effective and resistant to a broad spectrum of chemicals, though not suitable for high-temperature use or strong organic solvents.
Size and Capacity
The size of the funnel, specifically its diameter and capacity, should align with the volume of the solution being filtered and the desired amount of solid precipitate. Funnels range from small benchtop models to larger industrial-grade units. Consider the following:
- Diameter: The top diameter dictates the size of filter paper that can be used effectively. Ensure the chosen funnel can accommodate standard filter paper sizes available in your lab.
- Stem Length/Diameter: A longer, wider stem can facilitate faster drainage, which is important for quick filtration processes.
- Overall Capacity: Match the funnel's capacity to the typical experimental volumes to avoid overflow or requiring multiple filtration steps.
Filtration Performance and Compatibility
The design of the funnel significantly impacts filtration efficiency, especially when used with vacuum assistance. Key features to evaluate include:
- Perforated Plate: The design and number of perforations on the internal plate support the filter paper and allow for even liquid flow. A well-designed plate prevents filter paper tearing under vacuum.
- Side Arm/Vacuum Port: For vacuum filtration, a sturdy side arm with a compatible hose barb is essential for connecting to a vacuum pump or aspirator. Ensure the connection is airtight and robust enough to withstand constant vacuum pressure.
- Filter Paper Compatibility: Always verify that the funnel's perforated plate diameter is suitable for standard circular filter papers. The correct fit minimizes bypass and ensures efficient separation.
