NERV
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Registered: 22-9-2002
Location: USA
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Taking the vacuum off.
I recently got myself a 1-liter vacuum still on E-bay. I wanted to know the proper way to return the still to atmospheric pressure. I have herd that
you need have a small bleeder valve to allow the air to enter into the system slowly, but I also heard that you could just pull the tube running to
the aspirator off. I would think the second method would re-pressurize the glass to fast causing an explosion. What methods do you guys suggest?
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a_bab
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Registered: 15-9-2002
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Mood: Angry !!!!!111111...2?!
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If the tube diameter is small, you can simply pull the tube off. Still you are in danger of cracking the glassware.
Why about bending the tube, allowing
only a small quantity of air to enter ?
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rikkitikkitavi
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or install a t-connectr, adding a tube ending in a screwclip which you can completely close the air flow in and slowly open up , slowly letting air
in when finishing the vacuum.
If you have a good vacuum source you can even use it as a course regulation of vacuum.
/rickard
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