In the highly sensitive environment of a health care facility, where both infectious patients and those highly susceptible to infection receive treatment, it is essential to minimize the possibility ...

A pair of Mayo Clinic studies shed light on something that is typically difficult to see with the eye: respiratory aerosols. Such aerosol particles of varying sizes are a common component of breath, ...

For a filter to be certified high-efficiency particulate air (HEPA), it must be tested and proven to filter particles as small as 0.3 microns to 99.97 percent efficiency at its designed air flow. To ...

image: Outdoor air pollution is a major contributor to indoor air pollution -- but high-efficiency particulate air (HEPA) filters used in the home significantly reduce fine-particulate matter in the ...

HEPA air filters promise to take nasty things out of the air, removing cigarette smoke, pollen and other irritants. How do they do this? Appliance Science looks at how HEPA air filters work, and how ...