Maximum permitted number of particles per m 3 equal to or greater than the tabulated size.
Clean room classification iso vs eu.
For cleanrooms and clean zones shown in iso 14644 1 2015 cleanroom limits for airborne particulate contamination clean room and clean air device classification in relation to gmp 2008.
Whereas cleanliness standards were once defined by the federal standard 209e they have been replaced and simplified by iso with classifications 1 to 9.
Under the fed ste 209e system there was no equivalent for this level of cleanliness.
The class defines a minimum cleanliness level not a specific design.
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.
A cleanroom must have less than 35 200 000 particles 0 5 micron per cubic meter and 20 hepa filtered air changes per hour.
Classification 1 is the cleanest.
The latter to cleanrooms where biocontamination may be an issue.
The particles range in size from 1 5 microns µm.
The equivalent fed standard is class 100 000 or 100 000 particles per cubic foot.
Ordinary room air is around class 1 000 000 or iso 9.
Iso 14644 1 and older standard fs 209e determine class by the concentration levels of particles.
As of november 29th 2001 the federal standard 209e has been replaced with iso 14644 1.
To meet requirements of a clean room as defined by federal standard 209e and newer iso standards all clean rooms must not exceed a particulate count as specified in the air cleanliness class.
If you do business in europe and are installing a clean room that deals with the manufacture of sterile medicinal products your clean room must adhere to the most recent set of standards set forth in the revision of the annex to the eu guide to good manufacturing practice manufacture of sterile medicinal products.
Iso 8 is the least clean cleanroom classification.
B the guidance given for the maximum permitted number of particles in the at rest condition corresponds approximately to the us federal standard 209e and the iso classifications as follows.
Grades a and b correspond with class 100 m 3 5 iso 5.
The former applies to clean rooms in general see table below.
Iso 14644 1 and iso 14698.
However class will greatly impact design considerations such as filtration hvac requirements and other design elements.
In reality however you can reach an iso 6 clean room with 1 recommendation is 2 airlock.
Classification 9 is defined as room air.
Clean room classifications can be confusing.
