Sulaiman
International Hazard
Posts: 3692
Registered: 8-2-2015
Location: 3rd rock from the sun
Member Is Offline
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Rubber sheet to aid with vacuum filtering
A really useful tecnique
https://www.youtube.com/watch?v=8ylKINhV490
(skip to 13min45sec)
I'm going to try this very soon.
(vacuum filtering mercury through my 60ml fritted filters leaves about 30g un-filtered,
as soon as air can pass around the central blob .)
PS In my specific case (mercury)
I'm now considering a near-fitting thin disk of ptfe or hdpe.
(tight fitting may be inconvenient to remove)
I'll try pe 'cling film' first.
[Edited on 30-6-2024 by Sulaiman]
CAUTION : Hobby Chemist, not Professional or even Amateur
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Rainwater
National Hazard
Posts: 919
Registered: 22-12-2021
Member Is Offline
Mood: indisposition to activity
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I get a similar problem with viscous materials. A thin sheet of plastic kitchen wrap layed on top of the buchner funnel does good but is prone to
ripping.
Ya. Thats it. Maybe i should switch to a balloon. Anywas. Its at 9min 20 seconds.
[Edited on 1-7-2024 by Rainwater]
"You can't do that" - challenge accepted
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