A cleanroom is a controlled environment where pollutants like dust, airborne microbes and aerosol particles are
filtered out in order to provide the cleanest area appropriate for electronics, food, pharmaceutical and medical
Cleanrooms are graded differently depending on the varying particles count and size. The ambient air outside in
a typical city environment contains 35,000,000 particles per cubic meter, 0.5 micron and larger in diameter.
Ordinary room air is approximately equivalent to ISO 9 cleanroom which is at the lowest level of cleanroom
The key component in a cleanroom is the High Efficiency Particulate Air (HEPA) filter that is used to trap particles
that are 0.3 micron and larger in size. Our employees working in cleanroom also wear coats and other protective
covers to trap contaminants that are naturally generated by the skin and body.
Refer to the table below for the range of ISO class. The Wellness Fellows manufactures our masks in an
environment 100 times cleaner than a typical enclosed room.