Air filter papers are designed by air filter manufacturers to remove a range of contaminants from the air, including molds, gases, dirt and odors. There are specific air cleaner filters available for different needs, for not all filters are designed to remove the same particles. Filter efficiency is determined by a few different factors: the size of the filter fibers, the density of the fibers in the filter and the velocity of the air that moves through the filter.
Air filters are devices used to minimize or remove unwanted particulates from the air flow within a ventilation system or space to improve air quality and to extend the working life of machinery, engines and appliances. Filters are typically composed of a fibrous material which is constructed in a screen through which air is moved. Air filter manufacturers design air cleaner filters for different needs and filtration standards. The particles to be removed from the air can range from dust to pollen to mold spores to animal dander and other unwanted molecules carried by air. Types of filters include inline filters, membrane filters, air compressor filters and more which are simply constructed devices incorporated into a wide variety of everyday applications. Specialty filters such as dust collector air filter media or exhaust filters can be used to remove other contaminants such as gases and odors from air streams. In medical applications, filters can be used to remove bacterial and viral microbes and infections which are transported through air molecules. Electrostatic filters provide an almost permanent filtration screen solution and do not require a power source in order to be most effective. Most types of filters can be custom fabricated to an extent in order to meet specific requirements.