I was wondering if someone could enlighten me on some example us cases where one would be better of using a Buchner funnel with a fritted disc (example), as opposed to a Buchner "style" filter (example) that requires a filter paper (example).
A few times in the past when I was looking to filter a specific substance and asked about fritted discs, most of the replies were "don't use a fritted disc, just use a funnel with the filter papers instead," and this got me wondering when using a fritted disc would be preferable over a filter paper. Originally, in my chemistry naivety, I mentioned that I may end placing a filter paper inside a Buchner funnel with a fritted disc, to "get the best of both worlds" I suppose, but this idea was shot down pretty quickly.
Heres the pros/cons list for both filter types that I have thus far, hoping some can add to it:
Buchner "style" filter with filter papers
- The filter papers are cheaper
- Changing the filter paper pore sizes are much easier, as it's just a matter of getting the filter papers with the desired pore size
- One can easily cut the filter papers to the proper diameter if needed
Buchner filters with fritted discs
- Filters are reusable if cleaned properly
- Fritted discs are much more expensive than filter papers
- Fritted discs don't seem to have specific pore sizes
- Fritted discs seem like they can be a pain to clean properly
Thanks in advance for any input!