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ISO Cleanroom Specifications

  • 2022-03-02
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The ISO 1 specification for cleanrooms require less than 2 particles greater than 0.3 microns and no particles greater than 1.0 microns per cubic meter. An ISO 1 cleanroom typically has from 500-750 air changes per hour and typically utilizes ULPA filtration. Other common characteristics are 100% ULPA ceiling coverage and raised floors.It is the most clean of the cleanroom classification.

The ISO 2 specification for cleanrooms requires less than 11 particles greater than 0.3 microns and no particles greater than 1.0 microns per cubic meter. A IS0 2 cleanroom typically has 500-750 air changes per hour and typically utilizes ULPA filtration. Other common characteristics are 100% ULPA ceiling coverage and raised floors.It is the 2ndmost clean classification.

The ISO 3 specification for cleanrooms requires less than 102 particles greater than 0.3 microns and no more than 8 particles greater than 1.0 microns per cubic meter. A IS0 3 cleanroom typically has 500-750 air changes per hour and typically utilizes ULPA filtration. Other common characteristics are 100% ULPA ceiling coverage and raised floors.It is the 3rd most clean classification.

The ISO 4 specification for cleanrooms requires less than 1020 particles greater than 0.3 micronsand no more than 2 particles greater than 5.0 microns per cubic meter. An IS0 4 cleanroom typically has 500-600 air changes per hour and typically utilizes ULPA filtration. Other common characteristics are 100% ULPA ceiling coverage and raised floors.It is the 4th most clean classification.

The ISO 5 is a super clean cleanroom classification. A cleanroom must have less than 3,520 particles >0.5 micron per cubic meter and 250-300 HEPA filtered air changes per hour. The equivalent FED standard is class 100 or 100 particles per cubic foot. Common applications are semiconductor manufacturing and pharmaceutical filling rooms.

The ISO 6 is a very clean cleanroom classification. A cleanroom must have less than 35,200 particles >0.5 micron per cubic meter and 180 HEPA filtered air changes per hour. The equivalent FED standard is class 1000 or 1000 particles per cubic foot.

The ISO 7 is a common clean cleanroom classification. A cleanroom must have less than 352,000 particles >0.5 micron per cubic meter and 60HEPA filtered air changes per hour. The equivalent FED standard is class 10.000 or 10,000 particles per cubic foot. Common applications are pharmacy USP800 compounding rooms, electronics manufacturing and medical device manufacturing.

The ISO 8 is the least clean cleanroom classification. A cleanroom must have less than 35, 200,000 particles >0.5 micron per cubic meter and 20 HEPA filtered air changes per hour. By comparison a typical office space would be 5-10 times more dirty. The equivalent FED standard is class 100,000 or 100,000 particles per cubic foot. Common applications include plastic extrusion for medical devices, e-liquid manufacturing, and nutraceutical packaging.


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