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Discussion Starter · #21 ·
You can purchase bell jars and other vacuum containers--or the entire set-up--from Carolina Biological. If you buy just the container, you're still left with `needing a base that is air tight as well as a way to connect your vacuum pump. But maybe looking at what they offer will give you some ideas.
Thanks, that's a good
 

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Discussion Starter · #22 ·
A bell jar with a stand and a vacuum pump and your good to go. Bell jar needs a valve.
Unless you spend a ton on a vacuum pump all you will get is about 50 microns. I have a two stage pump that gets a bit below 50. 50 is nothing to worry about collapsing the bell jar.
It is an very expensive machine that gets below this level and they run for weeks. We are not talking outer space.
Great, thanks
 

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