While the pandemic granted air quality tremendous attention, air filter selection and installation in HVAC systems remain on the back burner. Filtration systems installed in smart cities to provide a built environment that is clean and green still need the charm and leadership required to make air quality a global priority. The time to halt […]

There’s more to selecting the right wire filtration mesh than its micron retention rating. Filtration designers would love to depend on certain known quantities from which to start a new filter product design. Unfortunately, wire mesh is not one of them. The qualities of wire mesh often defy the typical physical qualities that more compliant […]

Mechanisms for particle filtration. Image courtesy of AERFIL. HEPA and ULPA filters have been in use around the world for many years. The first HEPA filter was developed in the late 1940s. The original procedures to test these filters were also developed around the same time. Although these original test procedures are still practiced in […]