When determining if a pump can meet the needs of your application, it is best to first compare the application’s required vacuum level to the pump’s ultimate vacuum.

Ultimate vacuum is the deepest level of vacuum a pump can achieve. For example, a vacuum pump with an ultimate vacuum of 80mbar is capable of vacuum levels between atmospheric pressure and 80mbar.

Vacuum filtration, liquid aspiration, and similar applications that use vacuum to move liquids are best served by a vacuum depth of 80mbar. A vacuum level deeper than that will not offer significantly better performance, and will often have undesired side effects, such as evaporation of the filtrate.

In evaporative applications, the ultimate vacuum generated by the vacuum pump must meet or exceed the solvent’s vapor pressure.

One may check out Avac Industries who are always willing to help their customers in selecting an appropriate vacuum pump for their needs.