In reality however you can reach an iso 6 clean room with 1 recommendation is 2 airlock.
Iso class 8 clean room temperature.
Iso 16644 1 air cleanliness classes for cleanrooms and clean zones iso classification si english former fed std 209e iso class 3 m 1 5 1 iso class 4 m 2 5 10 iso class 5 m 3 5 100 iso class 6 m 4 5 1 000 iso class 7 m 5 5 10 000 iso class 8 m 6 5 100 000 the required standard of cleanliness of a room is dependent on the task.
Clean room classifications are based on an eight class rating system with an iso class 1 cleanroom being rated the most particle free and iso class 8 allowing the most particles.
Clean rooms need a lot of air and usually at a controlled temperature and humidity.
As a general rule of thumb the cleaner the cleanroom needs to be the more air it will need to use.
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.
Iso 8 is the least clean cleanroom classification.
Clean room classification iso class.
By comparison a typical office space would be 5 10 times more dirty.
Iso clean room classifications are rated according to how much of a particulate of a specific size exists per cubic meter within a given enclosure see second chart.
The lower the iso class the more stringent the requirements for keeping particles and contamination to the acceptable levels of the room class.
The equivalent fed standard is class 100 000 or 100 000 particles per cubic foot.