The Vespiary

The Hive => Newbee Forum => Topic started by: ekolo on January 22, 2004, 11:31:00 AM

Title: vacuum pump question.
Post by: ekolo on January 22, 2004, 11:31:00 AM

i have a vacuum pump that is 120mmHg is my pump strong enough to distil ketone.
and i have 2 of these pumps is there a methode to conect them bothe to get a stronger vacuum pump just a question.

Title: yes
Post by: BieneMaya on January 23, 2004, 05:14:00 AM

What I know there should be a higher vacuum
then connecting two pumps.

There are ultra high vac pumps (diffusion pumps)
that pull a vacuum of 0,000000001  torr.

These pumps only run if another vac pump is
preswitched.

Title: ok then
Post by: ekolo on January 23, 2004, 08:49:00 AM

ok then my pump is strong enough to distil ketone.

Title: > ok then my pump is strong enough to ...
Post by: Osmium on January 23, 2004, 12:01:00 PM

> ok then my pump is strong enough to distil ketone.

Nope.

Title: ok but how about if i had two of 120mmhg is...
Post by: ekolo on January 23, 2004, 01:14:00 PM

ok but how about if i had two of 120mmhg is the vacuum strong enough. and how strong must a pump be to pull ketone, whats the minimal in mmhg.

Title: Pump for ketone
Post by: wolfx on January 23, 2004, 02:11:00 PM

You can distill ketone with an aspirator ( I did it once ) but it takes longer and is more difficult than with a pump. A typical good aspirator vacuum is 35 mm Hg. A typical good rotary vane pump vacuum is 0.50 mm Hg. I agree with Osmium, your vacuum is not good enough. Don't try to add two pumps, get a good one.

Title: oh ok thanks for the help and tips i gues its...
Post by: ekolo on January 23, 2004, 02:48:00 PM