High-efficiency particulate air (HEPA), also known as high-efficiency particulate absorbing and high-efficiency particulate arrestance, is an efficiency standard of air filter.
Filters meeting the HEPA standard must satisfy certain levels of efficiency. Common standards require that a HEPA air filter must remove—from the air that passes through—at least 99.95% (European Standard) or 99.97% (ASME, U.S. DOE) of particles whose diameter is greater than or equal to 0.3 µm.
HEPA filters are filters with very strong drafting power. Thanks to this feature, it is used in many areas. HEPA filters are mostly used in hospital buildings, operating rooms and especially in clean rooms. Since it has a safe structure and its gravity is extremely good, it keeps the moisture, temperature, dust and other elements in the environment in balance and provides a healthier environment.
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