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Knowing More on HEPA Filter-Vacuum Cleaners During World War II, when highly classified companies where dealing with radioactive materials, they introduced High Efficiency Particulate Air (HEPA) filters were invented to prevent these harmful radioactive particles from escaping in laboratories. The filter is made up of a mesh of randomly arranged fiberglass fibers that catch large particles including the microscopic ones. Nowadays, the use of HEPA filters has been beneficial not only in air filtration systems, but also in the technology of vacuum cleaners. One of the benefits of the HEPA filter vacuum cleaner is that the indoor air quality is greatly improved due to the filtering efficacy of HEPA filter which can eliminate element-causing allergy and asthma. In comparison between the conventional vacuum filters to HEPA filters, the conventional vacuum filters perform as a sieve and small size particles that are much smaller than the sieve’s diameter opening can pass through it, while with HEPA filters, they are designed to trap the smallest pollutants when air is forced through the fiberglass mesh, thereby, isolating the particles that will cling to the individual fibers. The design effectiveness of the HEPA filter is such that it can remove 99.97% of all particles greater than 0.3 microns, so dust mites which is of 5 microns size and human hair of 40 micron size are basically trapped in the HEPA mesh and it just complies better to the government standards require that particle size with an equivalent to one-thousandth of a millimeter must be filtered out of the vacuum’s exhaust.
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Genuine HEPA filter vacuum cleaners have to pass through government standard tests to guarantee that the products have all been tested and are of superior quality; therefore, the following are the ways to check if what your are buying is a genuine HEPA filter vacuum cleaner: genuine HEPA filters must pass through government standard test and the test results are printed on the filter itself, including the MERV (Minimum Efficiency Reporting Value) rating, which is an evaluation system that rates a filter’s ability to remove particles from the air based on a scale of 1-20, to which the higher the rating the higher the ability of the filter to remove smaller particles.
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Further, to achieve an effective HEPA filtration system, the unit must be sealed so that there is no air flow around the filter, and if it is 100% sealed, it prevents large amounts of particles from re-entering the surrounding air. HEPA filters can further trap returning dust particles, thus preventing fewer microbe dust fragments from escaping in the exhaust. The HEPA filter vacuum cleaner has proven its worth by preventing the emission of very minute impurities and other contaminants, like dust, smoke, mold, bacteria, and pollen, back into the air we breathe, and, therefore, this vacuum cleaner is beneficial in the home and office.