IEST-RP-CC021.2: Testing HEPA and ULPA Filter Media

摘要

This RP has been in use among all major media makers since its initial publication. When followed consistently, it allows filter manufacturers to use media to consistently meet filter specifications. The methods outlined in the RP are robust enough that they may be used, in principle, for testing even lower-performance media. Although filter efficiency is often considered the key performance indicator of media, the physical properties discussed above are also vital in ensuring that the media can be successfully made into a filter without loss of performance. The use of standards such as this RP ensures not only that the customer has a consistent measure for comparing and selecting media, but that the manufacturer has a consistent method to control its process.