That’s pretty broad in a really uncertain area. We build filter units that filter down to 1 micron and below. None of the information we found really made any sense in actual tests. We ended up building units, running them inn test shops and then doing laser particle counts to get accurate data.
The best guy I have ever met is John at D.R. Shannon. Really knows his stuff.
John
D. R. Shannon
23407 Pacific Hwy. So.
Des Moines, WA 98198
USA
(800)255-1032
What are you looking for specifically? Suppliers? Consultants? Comparisons of technologies? What works best for a given application or industry? What are the pitfalls to watch out for? How to proceed with design and implementation?
You might receive more useful information if you post your questions on this forum. There is also another forum called "Membrane Engineering" in the Chemical Engineering section within this site.
When searching for information on unfamiliar subjects, always be on guard against "sales-tips" and "google-tips" vs. knowledge-based and experience-based "eng-tips". Unfortunately, you get them all on this and other open forums.