Vacuum Pump & Setup for 20-25cm Cylinder

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The discussion focuses on setting up a vacuum system for a 20-25cm cylindrical container, aiming for a vacuum of 1-10 pascals. The user seeks advice on suitable vacuum pumps and related equipment, expressing a lack of experience with vacuum technology. They mention a helpful resource for beginners on vacuum setups. The inquiry invites input from those with practical experience in similar projects. Overall, the thread emphasizes the need for guidance on achieving effective vacuum conditions in a bell jar setup.
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To begin, I'm not sure if this is the right subforum for my question, and whether questions like this, in particular, questions about the details of personal projects, are allowed on this forum. Being new to this forum, if I have made any mistake in this regard, I apologize in advance, and will be willing to adapt my question if necessary.

Setting that aside, I have recently begun looking into a project that involves maintaining a medium vacuum in a cylindrical container (most likely a bell jar) roughly 20-25cm on all sides. I would like to achieve a vacuum of 1–10 pascals (7.5–75 millitorr). Have any of you had particular experience with setups like these, and if so, what vacuum pump do you think would be best used for this particular situation? I have never worked with vacuum pumps before, so I am a bit naive about vacuum pump brands, tubing for such pumps, and the containers themselves.
 
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UltrafastPED said:
This will get you started: http://www.belljar.net/basics.htm

The website was very informative and helpful. Thank you very much.
 
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