Iso 9 Clean Room

Methods for evaluating and measuring cleanrooms and associated controlled environments.

Iso 9 clean room. For instance class 7 cleanroom class 10 000 should contain no more than 2 930 ppm of particulates that are less than 5 microns in size or 352 000 ppm of particulates less than 0 5 microns per cubic meter of room area. The ambient air outside in a typical city environment contains 35 000 000 particles per cubic meter 0 5 micron and larger in diameter corresponding to an iso 9 cleanroom which is at the lowest level of cleanroom standards. The primary authority in the us and canada is the iso classification system iso 14644 1. This standard includes the cleanroom classes iso 1 iso 2 iso 3 iso 4 iso 5 iso 6 iso 7 iso 8 and iso 9 with iso 1 being the cleanest and iso 9 the dirtiest class but still cleaner than a regular room.

Iso cleanroom classifications are usually associated with particulate counts rather than airflow. Analysis shows there are about 500 000 to 1 million particles per cubic feet of air. An iso 1 is the cleanest whereas an iso 9 is the dirtiest status for cleanroom standards. The latter to cleanrooms where biocontamination may be an issue.

Cleanroom testing for compliance. Ordinary room air is around class 1 000 000 or iso 9. The former applies to clean rooms in general see table below. To measure contaminants found in the cleanroom the standard deployed is a micron or micrometer μm micron measurement represents the cleanroom standard size for.

Iso 14644 1 and iso 14698.