ULPA is an acronym for "ultra low particulate air".
An ULPA filter (theoretically) can remove from the air at least 99.999% of dust, pollen, mold, bacteria and any airborne particles with a size of 120 nanometres or larger. A number of Recommended Practices have been written on testing these filters including IEST-RP-CC001: HEPA and ULPA Filters, IEST-RP-CC007: Testing ULPA Filters, IEST-RP-CC022: Testing HEPA and ULPA Filter Media, and IEST-RP-CC034: HEPA and ULPA Filter Leak Tests.[1]
See also
References
- ^ "IEST Recommended Practices". IEST. Last updated 2007-12-03. http://www.iest.org/i4a/pages/index.cfm?pageid=3280. Retrieved on 2008-01-14.
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