AEROSOL FILTRATION BY MEANS OF NUCLEPORE FILTERS STRUCTURAL AND FILTRATION PROPERTIES

The studies of Fleischer, Price, and their collaborators led to the development of a new type of filter material, a porous analytical filter trade-named Nuclepore. This resembles membrane filters in many of its properties, such as the relationship between air flow rate and pressure drop. One previously developed theory of filtration by membrane filters approximated their structure as a group of parallel capillaries. This model appeared to be an exact description of the structure of Nuclepore filters. Accordingly, the filtration properties of Nuclepore were determined and compared with an extension of the previous filtration theory. Both the initial performance and the change in properties caused by previously collected material were adequately accounted for by the theory. © 1969, American Chemical Society. All rights reserved.