RogueRose
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Adapter for flask for filtering?
Are there any adapters that llow the use of regular flasks for filtering instead of having to buy a specific filtering flask with a vacuum port on it?
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greenlight
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The Buchner vacuum filtering flasks are made with much thicker walls to handle the pressure from the vacuum source so that they do not implode..
I have never seen an adapter for a standard conical flask as I don't think they will hold up to the pressure.
The only use for an atomic bomb is to keep somebody else from using one.
George Wald
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RogueRose
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Quote: Originally posted by greenlight  | The Buchner vacuum filtering flasks are made with much thicker walls to handle the pressure from the vacuum source so that they do not implode..
I have never seen an adapter for a standard conical flask as I don't think they will hold up to the pressure. |
Thanks. I was planning on using a heavy/thick wall flask as I found some 2L for a really good price IMO ($22)
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Sulaiman
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You could use one of these http://www.ebay.co.uk/itm/24-40-Glass-Vacuum-Take-off-Adapte...
or
one of these http://www.ebay.co.uk/itm/15ml-Buchner-Funnel-Glass-Separato...
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Dr.Bob
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They do make thick walled erlenmeyers for use under vacuum, but they tend to cost a lot, and weigh a lot. Filter flasks are not that pricey, if you
look around, I have some used ones available for $18 each plus postage. If you don't mind small chips or scratched up ones, I have a few I would sell
for less. It is not trivial to adapt an erlenmeyer for filtering, easier to do with a 24/40 joint, those adapters I also have cheap, but work best
for small Buchners, not big ones, too unstable.
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