16 Jul

Vacuum

Need a quick way to draw vacuum in the lab?  As long as you have a sink with a faucet you can use an aspirator.  The running water going through the aspirator carries air with it pulling a vacuum.  Aspirators can pull up to 723.9mm Hg (28.5in. Hg) of vacuum.  Another alternative is the Nalgene hand pump.  The Nalgene hand vacuum pump can draw up to 635 mm (25″) Hg vacuum.  Nalgene pumps are also available with vacuum gauges.  Remember with all vacuum pumps you will need vacuum tubing as other types of tubing will collapse.  Be sure that the labware is rated for vacuum before using any vacuum pump.

Robin Prymula