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Re: Creating vacuum
Posted By: Jan In Response To: Re: Creating vacuum (Dennis McInerney)
Date: Sunday, 29 July 2007, at 12:02 p.m.
Hi Dennis
Thanks for the info. What type of foreline trap did you use, and what vacuum did you obtain without the trap? Some background to this question: Traditional foreline traps use mole sieve pellets, which I believe is difficult to regenerate due to poor heat transfer.
A better(?) design is described in "The Bell Jar". See
http://www.belljar.net/82trap.pdfThis design is marketed by Lesker under the name "Micromaze". See
http://www.lesker.com/newweb/traps/forelinetraps_absorbentplate_micromaze.cfm?pgid=0An example of the old traps can be found at
http://www.lesker.com/newweb/traps/forelinetraps_molecularsieve.cfm?pgid=inlinestraightJan
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