A PRACTICAL APPROACH TO HEPA FILTER LEAK TESTS

摘要

Manufacturers of high-efficiency particulate air (HEPA) filters for cleanrooms and controlled environments test their products for particle removal efficiency. Equally, once the unit is installed in the user's production site, the test should be performed promptly to verify the integrity of the filter as well as the installation. Typically, HEPA filters capture up to 99.97% of particles as small as 0.3 microns.