FILTECH 2015 Conference will feature 200 technical papers, a Plenary Lecture and 6 Keynote Lectures presented by leading experts. Profit from high-level knowledge transfer and learn about future trends and perspectives!
The FILTECH Conference is a Must for all those concerned with designing, improving, purchasing, selling or researching F&S equipment and services of all industry sectors. Technology and know-how transfer is a main target.
For many years, measuring pore sizes by bubble point and Porometry has been a very convenient method of evaluating the performance of filter media. Although there can be good repeatability within a single laboratory, as the number of manufacturers and models increase, it has become increasingly difficult to compare results in different laboratories, sometimes even when the same model Porometer is used. Furthermore, the technique is an indirect or secondary method relying on theoretical prediction to calculate pore size. The results are therefore not directly traceable to the international standard metre, for example NIST. By contrast, challenge testing is a direct or primary method because the challenging particles that pass the filter can be collected and measured precisely. However, in order to obtain accurate results, it is essential to have an understanding of particle size and shape analysis, otherwise the results could be equally ambivalent. This review will examine the basic principles of particle characterisation relevant to challenge testing filter media so that unambiguous results can be obtained so providing a universal bench mark with which assess the performance of filter media.
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