Confocal Microscopy List

Re: Vacuum pump advice?

Posted by Guy Cox on
URL: http://confocal-microscopy-list.275.s1.nabble.com/Vacuum-pump-advice-tp592434p592437.html

Search the CONFOCAL archive at http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal

Well, it only has to stand one atmosphere so the specification isn't onerous. There

are lots of options. If you know anyone who is scrapping an old Philips EM400 electron

microscope (now 30 years old) it has a particularly big and high-quality buffer tank. I don't

know the scale of your system so I can't really recommend a capacity but if you can

get 20 litres (5 US gallons) I'd have thought it would do.

Guy

Optical Imaging Techniques in Cell Biology
by Guy Cox    CRC Press / Taylor & Francis
    http://www.guycox.com/optical.htm
______________________________________________
Associate Professor Guy Cox, MA, DPhil(Oxon)
Electron Microscope Unit, Madsen Building F09,
University of Sydney, NSW 2006
______________________________________________
Phone +61 2 9351 3176     Fax +61 2 9351 7682
Mobile 0413 281 861
______________________________________________
     http://www.guycox.net

From: Confocal Microscopy List [mailto:[hidden email]] On Behalf Of Craig Brideau
Sent: Thursday, 6 March 2008 9:30 AM
To: [hidden email]
Subject: Re: Vacuum pump advice?

Search the CONFOCAL archive at http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal What can I use for the buffer tank? Is there a particular style, or can I just stick any old pressure tank on the line and draw a vacuum reservoir on it?

Thanks,

Craig

On Tue, Mar 4, 2008 at 1:36 AM, Guy Cox <[hidden email]> wrote:

Search the CONFOCAL archive at http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal

Craig,

             The first thing you should be looking at is a big buffer

tank to even out the fluctuations. Having a lower Torr than you

need will do very little for you - the difference in the total mass

of air in a chamber at 0.1T vs 1T is tiny. The displacement is

the key thing - it must be able to handle everyone wanting it at

once.

                                                                       Guy

Optical Imaging Techniques in Cell Biology
by Guy Cox    CRC Press / Taylor & Francis

     http://www.guycox.com/optical.htm
______________________________________________
Associate Professor Guy Cox, MA, DPhil(Oxon)
Electron Microscope Unit, Madsen Building F09,
University of Sydney, NSW 2006
______________________________________________
Phone +61 2 9351 3176     Fax +61 2 9351 7682
Mobile 0413 281 861
______________________________________________
http://www.guycox.net

From: Confocal Microscopy List on behalf of Craig Brideau
Sent: Tue 08/03/04 8:38 AM
To: [hidden email]
Subject: Vacuum pump advice?

Search the CONFOCAL archive at http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal We are setting up a new lab section and we need to select a vacuum pump to hook up to our vacuum plumbing. We have a large manifold system that ties multiple vacuum taps together into one central location. We plan on using a single pump to provide for the whole lab. My concern is in vacuum stability as users open and close the tap, as well as capacity. Should I be looking for a pump with a strong vacuum draw (low Torr number), or large displacement (liters/minute)?

Thanks,

Craig

No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.5.516 / Virus Database: 269.21.4/1309 - Release Date: 3/03/2008 6:50 PM

No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.516 / Virus Database: 269.21.4/1309 - Release Date: 3/03/2008 6:50 PM