Iso 14644 1 and iso 14698 are non governmental standards developed by the international organization for standardization iso.
Iso clean room chart.
To some extent iso 14644 cleanroom standards.
Iso 6 cleanroom class 1 000 in theory for an entire room to reach iso 6 air cleanliness you need to enter the cleanroom via an iso 8 ante room then go through an iso 7 to finally get into the iso 6 as shown in the image.
Positive pressure keeps new particles from entering the clean area.
A cleanroom must have less than 35 200 000 particles 0 5 micron per cubic meter and 20 hepa filtered air changes per hour.
Terms definitions and units.
Ordinary room air is around class 1 000 000 or iso 9.
Iso 14644 1 and iso 14698.
The former applies to clean rooms in general see table below.
Iso 8 is the least clean cleanroom classification.
What makes a clean room a cleanroom.
This control is achieved by air pressure and filters.
By comparison a typical office space would be 5 10 times more dirty.
A cleanroom is an enclosed room equipped to control the levels of airborne particulate matter.
In reality however you can reach an iso 6 clean room with 1 recommendation is 2 airlock.
The cleanroom classification standards fs 209e and iso 14644 1 require specific particle count measurements and calculations to classify the cleanliness level of a cleanroom or clean area.
In the uk british standard 5295 is used to classify cleanrooms.