Short Path Vacuum Distillation is a high vacuum distillation technique which enables the separation of heat-sensitive or high molecular weight compounds not possible by conventional techniques. Short Path Vacuum Distillation gets its name from the distance in which the vapour stream is condensed. In this case, the evaporator wall generates the vapours as the feed moves by gravity down the evaporator wall while being agitated and distributed evenly. The vapour stream travels a “short path” directly to the condenser which is located within the evaporator chamber.
Since the vapour stream is immediately condensed, the short path distillation process precludes the vapour from forming vapour pressure, resulting in ultimate pressures of 0.001 mbar being attained. This allows heat-sensitive materials to undergo purification at much lower temperatures, preventing degradation, and allows for very high equivalent temperatures to be achieved at ambient pressure.