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Cleanrooms are classified by cleanliness, measured by the number and size of particulates in the air. The International Standards Organization (ISO) has established a classification system specifically for cleanroom environments. The ISO 14644-1 cleanroom standards are composed of nine classifications for cleanrooms based on the maximum number and size of particulates that exist per cubic meter. A Class 1 designation indicates the highest level of cleanliness with the least number of particulates, while Class 9 indicates the lowest level of cleanliness with the maximum number of particles in the air. For more detailed information, see the chart below.
ISO 14644-1:2015 Cleanroom Standard – This chart details for each classification the maximum number of particles in micrometers (µm) permitted per cubic meter of air.
Different industries require different standards of cleanliness in their cleanrooms. We work with you to ensure your space meets the requirements for your specific application.
STERIS offers modular cleanrooms, cleanroom certification and biodecontamination services to help you achieve the cleanroom classification you require.
Certification, testing and decontamination services are part of our Controlled Environment Services portfolio. View a complete list of our service offerings.
Hardwall and softwall cleanrooms are part of our Controlled Environment Services portfolio. View a complete list of our cleanroom offerings.