What is a cleanroom?

What is a cleanroom and why are they called clean rooms?

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A cleanroom is a controlled environment where products are manufactured. The cleanroom provides an aseptic environment in which the concentration of airborne particles is controlled to specified limits. These limits are defined by the nature of the process or production happening within the environment. Within the cleanroom environment, air particles are measured in microns or micrometers. Micron-sized particles are smaller than a living cell and can be seen only with the most powerful microscopes. To achieve the required environmental conditions deemed necessary by the cleanroom production, the air in a cleanroom is purified using High Efficiency Particulate Air (HEPA) filters. Air is forced through the filters, which remove particles as small as 0.5 microns. The filtration system depends upon the required level of cleanliness. Cleanrooms are controlled environments in which contaminants, temperature, pressure, static, humidity or other elements are controlled even if adherence to a cleanroom standard is not required.

Answered on May 17, 2017.
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