Iso Clean Room Standards
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 clean room standards. A cleanroom must have less than 35 200 000 particles 0 5 micron per cubic meter and 20 hepa filtered air changes per hour. Cleanrooms are rated based on the number of particles they can handle. By comparison a typical office space would be 5 10 times more dirty. Iso 8 is the least clean cleanroom classification.
Positive pressure keeps new particles from entering the clean area. This control is achieved by air pressure and filters. Cleanroom requirements and standards provide a direct and easy to understand way of detailing the differences between the eight classes of cleanrooms. A cleanroom is an enclosed room equipped to control the levels of airborne particulate matter.
Through its members it brings together experts to share knowledge and develop voluntary consensus based market relevant international standards that support innovation and provide solutions to global challenges. What makes a clean room a cleanroom. Iso is an independent non governmental international organization with a membership of 162 national standards bodies. The primary authority in the us and canada is the iso classification system iso 14644 1.
C n maximum permitted number of particles per cubic meter equal to or greater than the specified particle size rounded to whole number. N iso class number must be a multiple of 0 1 and. To some extent iso 14644 cleanroom standards.