Buchner Filter Funnels
Büchner filter funnels with sintered discs
The sintered discs fitted to these funnels are manufactured from the same PYREX borosilicate glass as the funnel bodies, making these funnels suitable to be used with a wide range aggressive chemicals.
- Comprehensive range of Büchner filter funnels with integral sintered glass discs
- Disc and funnel body manufactured from chemically resistant Pyrex glass
- For convenient filtration of solutions - No filter papers required - Highly resistant to most corrosive reagents including ammonia and concentrated sulphuric acid
Since they are manufactured from PYREX glass they are resistant to the majority of corrosive reagents, unaffected by ammonia, sulphuric acid and other solvents that are damaging to filter paper. The sintered glassware is available in six porosity classes from 0 – 5, as outlined in the table below. The pore sizes indicated, give a range of pores present within the sinter disc. Therefore, the size of particles that will be obstructed will generally be of a size at the upper end of the range.
|Porosity Grade||ISO 4793 designation||Pore Index (mic.)||Principal Uses|
|0||P250||160-250||Coarse filtration, gas dispersion and as a support for other filter material|
|1||P160||100-160||Coarse precipitate filtration, gas dispersion, coarse grain material filtration|
|2||P100||40-100||Medium and crystalline precipitate filtration, medium filtration and washing of gases|
|3||P40||16-40||Analytical work with medium precipitates|
|4||P16||10-16||Analytical work with fine precipitates|