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Originally Posted by unregistered
talcum
Ben and others did some speculation re a vacuum box, need a link to the thread ?
Ben ?
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After reading their thread, I'd recommend they check the Huntington and Ceramaseal sites for vacuum feedthroughs and Duniway Stockroom for vacuum equipment. They really want a convectron or Pirani gauge to check pressure. That will get them down to under 5 millitorr. They will also want to use soft copper tubing and swagelocks for their water fittings. I'd suggest a 10" dia chamber with Ceramaseal feedthroughs using a turbo pump with cold trap to rough. They might be able to get by with a Viton O-ring seal for millitorr pressure but CF gaskets should be used wherever possible.
Sorry, I started thinking like a lab rat again. It is possible, but not cheap or practical. Sorry for wasting your time.