About HEPA Filters
HEPA stands for high efficiency particulate air filter and describes a filter that can remove at least 99.97% of airborne particles 0.3 microns in diameter. Particles of this size are used to evaluate the performance of a filter because they are among the most difficult to remove. However, particles that are larger or smaller than 0.3 microns can be filtered with even greater efficiency due to the nature of the filter’s design. True HEPA filters are composed of a dense web of fibers designed to trap particles. This type of filter was first used in the 1940’s to trap radioactive contaminants in the air and protect scientists who were developing the first nuclear weapons. Today, HEPA is considered the safest and most efficient method to treat airborne particles. | multi-stage filtration process |
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