Sciencemadness Discussion Board
Not logged in [Login ]
Search the forums Search   Frequently Asked Questions FAQ   View member list Member List   Today's Posts Today's Posts   Forum Stats Stats Back to: sciencemadness.org
Sciencemadness Discussion Board » Engineering and Equipment » Reagents and Apparatus Acquisition » Adapter for flask for filtering? Go To Bottom

Printable Version  
Author: Subject: Adapter for flask for filtering?
RogueRose
International Hazard
*****



Posts: 1594
Registered: 16-6-2014
Member Is Offline


[*] posted on 15-8-2016 at 21:46
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?
View user's profile View All Posts By User
greenlight
National Hazard
****



Posts: 742
Registered: 3-11-2014
Member Is Offline

Mood: Energetic

[*] posted on 15-8-2016 at 22:09


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.



Be good, otherwise be good at it :)
View user's profile View All Posts By User
RogueRose
International Hazard
*****



Posts: 1594
Registered: 16-6-2014
Member Is Offline


[*] posted on 16-8-2016 at 00:39


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)
View user's profile View All Posts By User
Sulaiman
International Hazard
*****



Posts: 3698
Registered: 8-2-2015
Location: 3rd rock from the sun
Member Is Offline


[*] posted on 16-8-2016 at 01:18


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...
View user's profile View All Posts By User
Dr.Bob
International Hazard
*****



Posts: 2736
Registered: 26-1-2011
Location: USA - NC
Member Is Offline

Mood: No Mood

[*] posted on 16-8-2016 at 09:38


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.
View user's profile View All Posts By User

 Sciencemadness Discussion Board » Engineering and Equipment » Reagents and Apparatus Acquisition » Adapter for flask for filtering?   Go To Top