Iso Clean Room Standards

N iso class number must be a multiple of 0 1 and.

Iso clean room standards.

They range from an iso class 1 cleanest to an iso class 8 least clean. Iso is an independent non governmental international organization with a membership of 162 national standards bodies. A cleanroom is an enclosed room equipped to control the levels of airborne particulate matter. 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.

C n 10 n 0 1 d 2 08 1 where. Positive pressure keeps new particles from entering the clean area. By comparison a typical office space would be 5 10 times more dirty. Cleanroom requirements and standards provide a direct and easy to understand way of detailing the differences between the eight classes of cleanrooms.

A cleanroom must have less than 35 200 000 particles 0 5 micron per cubic meter and 20 hepa filtered air changes per hour. In the clean room standard iso 14644 1 classification of air cleanliness the classes are based on the equation. The primary authority in the us and canada is the iso classification system iso 14644 1. This control is achieved by air pressure and filters.

C n maximum permitted number of particles per cubic meter equal to or greater than the specified particle size rounded to whole number. Iso 8 is the least clean cleanroom classification. Cleanrooms are rated based on the number of particles they can handle.