Setup: vacuum aspirator pump, distillation apparatus with stirring (instead of a bubbler). Partial vacuum around 5" Hg.

What would you suggest to hold the vacuum set-point?

  • $\begingroup$ Somewhere there is a vacuum pump, isn’t there? Actually controlling the vacuum level (as opposed to just pumping on it) depends on the set up and your equipment. $\endgroup$
    – Jon Custer
    Nov 9, 2019 at 15:35
  • $\begingroup$ Is it possible to degas the solution before beginning the distillation? $\endgroup$
    – Andrew
    Nov 9, 2019 at 15:44
  • $\begingroup$ A fine hand with the faucet to which your pump is attached to, or a vacuum controller. $\endgroup$
    – Karl
    Nov 9, 2019 at 20:28


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