NERV - 16-1-2003 at 12:21
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?
a_bab - 17-1-2003 at 05:39
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 ?
rikkitikkitavi - 17-1-2003 at 11:22
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