Dear all,
I really appreciate if you could help me with a problem that I am confronted with these days.
I need some Information about "Filter Integrity Test methods".
What is the best way to verify the integrity of membrane filters?
Bubble Point and NWP are required.
How can I carry out these tests without having a Filter Integrity Test device?
Can I use a common procedure for both cartridges and cassettes? Or their tests are different?
I am very thankful for your time and consideration and an early reply would be highly appreciated.
Warm regards,
Sara
http://wine.appstate.edu/sites/wine.appstate.edu/files/Bubble%20Point%20Test.pdf
http://www.bioprocessresources.com/servicelist/information/filterintegritytesting
http://www.genengnews.com/gen-articles/8-tips-to-ensure-a-successful-filter-integrity-test/4676/
Hi, you may look at this paper for some thoughts..
Nassehi, V, Das, DB, Shigidi, IMTA, Wakeman, RJ (2010) Numerical analyses of bubble point tests used for membrane characterisation: model development and experimental validation, ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING, pp.1-13, DOI: 10.1002/apj.519.
It depends on your filter size...you can use pressure drop measurement
Egbert Jakobs, W.J. Koros. Ceramic membrane characterization via the bubble point technique. Journal of Membrane Science, 124 (1997) 149-159.
Capillary flow porometry, Vacuum decay testing, Water flow rate testing are most reliable testing methods to determine integrity of filters.
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