Moses
Well-known member
I'm going to buy a buchner funnel for filtering can anyone recommend what size pore it should be how small of micron size? I hope I'm describing it correctly, thanks Moses
I use 100mm buchner funnels and 600ml vacuum flasks.I'm going to buy a buchner funnel for filtering can anyone recommend what size pore it should be how small of micron size? I hope I'm describing it correctly, thanks Moses
Does the pore plate have tiny holes or big ones ?
Thats an awesome tip!If you start to tear the holes out in the filter, try adding a piece of fiberglass window screen between funnel and filter. This can also help speed up filtering in some cases.
make sure the edges of the filter paper extend past the screening. The screening lifts the paper ever so slightly but the edge is where the seal must be complete. Keeping the circle of screening you cut out so it stays inside all of the holes when placed in the filter is sufficient. But when you wet the paper to test suction, make sure the screen hasn't shifted.try adding a piece of fiberglass window screen between funnel and filter.
I would say that for ease of work, always add mesh under the filter paper. There are very specific cases when I will just use paper without mesh underneath, but for these occasions, I would just use fritted glass filter.If you start to tear the holes out in the filter, try adding a piece of fiberglass window screen between funnel and filter. This can also help speed up filtering in some cases.
Another key ingredient is an organized refinery and a staff that won’t just use the first thing they think will work. When the dreaded drip sets in all refinery hardware is apparently fair game in a lot of shops.but this is hugely dependent on what you are filtering through them. Junky solutions always through Buchner. But things like AgCl, silver powder, AR gold solution from refining... Legit. Easily cleaned afterwards.
True. Big part of success is to use right tools and right stuff for the job.Another key ingredient is an organized refinery and a staff that won’t just use the first thing they think will work. When the dreaded drip sets in all refinery hardware is apparently fair game in a lot of shops.
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