Controlling Pollutants And Bacteria With Air Filters And Purifiers

By Author: Edwin Amirian
Total Articles: 1
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Air filters and purifiers are highly efficient in that they are used where contaminants and bacteria need to be removed from air such as in medical situations or where people suffer from life threatening allergies.

Air filters and purifiers remove air pollutants to a specific standard; HEPA filters specifically, remove over 99% of airborne particles that are larger than 0.3 micrometers. Air filters and purifiers are designed to help with seasonal allergies, pet allergies, cigarette smoke or chemical sensitivities and airborne diseases.

These filters are made of a mat of of fiberglass where the fibers are randomly arranged with diameters between 0.5 and 2.0 micrometers. Factors that affect the performance of the filter are filter thickness, fiber diameter and the speed at which particles are intercepted. The particles are trapped in the filter as an air stream flows through. The effectiveness of this filter is mainly determined by the filter's thickness and the diameter of the fibers of which it is composed.

The filters trap particles in several different ways. They intercept particles as the air flows through ...
... the filter; particles in close proximity to the fiber are caught and trapped. By increasing the airflow and curving the airstream, particles can also be caught by impaction when the particles pass across the fibers. Diffusion is the process whereby gas collision is used to separate the smallest fibers by slowing them down as pass through the filter thus increasing their chances of being caught by the fiber.

Air filters and purifiers are highly efficient and are commonly used for medical applications to remove bacteria and prevent contamination; they are used in clean rooms and hospital wards where a high level of sanitation is required. Filter units that are used for medical applications also incorporate ultra violet lights to kill bacteria and viruses. The air purifiers come in various classes and ratings and, at the highest level used for medical applications, can remove up to 99.994% of contaminants ensuring the highest level for air purification.

The filters are important in the prevention of the spread of airborne organisms (such as bacteria and viruses) and in this way help to prevent infection. In some cases HEPA filtration systems used in medical applications include other measures to remove live bacteria and viruses trapped by the filter media.

Vacuum cleaners can also use these types of filters to help asthma and allergy sufferers. This is because they trap small particles such as pollen and dust mite feces that impact sufferers' symptoms. For these vacuum cleaners to be effective, however, all air that passes through them must go through the filter with no leakage. These types of vacuum cleaners also need to be more powerful because of the extra density of the filter.

air filters and purifiers are used in medical facilities, cars, airplanes and in the home. They are used when the quality of air needs to be guaranteed free of bacteria, pollutants and chemical molecules. The filters are used to certify that air is purified to a guaranteed level as defined by the US Government standard.

Have a look at our website for details about important factors to consider before choosing air purifiers cleaners, today. You can also visit our virtual store to view our range of air filters and purifiers, now.