Set of Rubber Cones for Buchner Funnel

The set of elastomer cones for vacuum filtration is designed to ensure a hermetic connection between the Büchner funnel and the Kitasato flask, allowing for effective and safe operation in negative pressure filtration systems. Its use is essential to prevent air leaks and guarantee the vacuum necessary during the process.

The set includes cones of different sizes, from No. 1 to No. 8, which allows them to adapt to a wide variety of combinations between funnels and flasks. The selection of the appropriate size depends on the diameter of both pieces, and in certain configurations, it may be useful to superimpose two cones to achieve a tighter fit.

Made of rubber or flexible elastomer, these adapters offer good adjustability, mechanical resistance, and adequate performance in laboratory applications where sealing and ease of assembly are required. Their conical design allows for progressive insertion and stable fixation between the glass components.

These cones are especially suitable for vacuum-assisted filtration systems, where the sample is poured into the Büchner funnel with filter paper, while the Kitasato flask collects the filtrate. The cone acts as an intermediate joining piece, ensuring the continuity of the system and helping to accelerate the separation process compared to gravity filtration.

The set covers a wide range of Kitasato flask capacities, offering a practical, versatile, and fundamental solution for laboratories that perform rapid and safe filtrations in analytical or preparative routines.