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Topic: Vacuum pump and cold trap  (Read 1764 times)

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Offline nimbus8

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Vacuum pump and cold trap
« on: April 14, 2013, 06:15:53 PM »
Hey everyone ive been looking into vacuum pumps and have run across a problem. Chemistry safe rotary vacuum pumps are way out of my budget and diaphragm pumps don't create a vacuum of at least .04 torr.

So i was looking into a regular rotary vacuum pumps but using a cold trap to prevent harmful gasses from entering my pump.

Would this work?
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Offline nimbus8

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Re: Vacuum pump and cold trap
« Reply #1 on: April 14, 2013, 07:10:20 PM »
I would also like to ask how much cfm is recommended for basic experiments and is 6 too much?
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Offline Arkcon

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Re: Vacuum pump and cold trap
« Reply #2 on: April 14, 2013, 09:28:14 PM »
It will depend on what sort of vapors you'll be pulling.  If the cold trap is adequate to condense most of the worst of them, you may avoid damage to the pump for the short term.  Though it would probably be best to stick with the chemical safe pumps.
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Hey, I'm not judging.  I just like to shoot straight.  I'm a man of science.
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