1. 
   vacuum distillation
   (from the article `distillation`) A variation of the reduced-pressure process uses a vacuum pump to produce a very high vacuum. This method, called vacuum distillation, is sometimes ... Vacuum distillation is sometimes used in fire refining. In this process, molten tin is heated in a dense graphite ...
   Found op http://www.britannica.com/eb/a-z/v/1
   
   
2. 
   Vacuum distillation
   Vacuum distillation is a method of distillation whereby the pressure above the liquid mixture to be distilled is reduced to less than its vapor pressure (usually less than atmospheric pressure) causing evaporation of the most volatile liquid(s) (those with the lowest boiling points). This distillat...
   Found op http://en.wikipedia.org/wiki/Vacuum_distillation
   
   
3. 
   Vacuum Distillation
   Vacuum distillation is a distillation process used for materials that have very high boiling-points or are likely to decompose below their boiling-point. Air is evacuated from the apparatus with a vacuum pump, and the vacuum so formed causes the materials being heated to boil at a temperature lower ...
   Found op http://www.probertencyclopaedia.com/browse/GV.HTM
   
   

Tip: double click on a word to show its meaning.