What is a cleanroom certification?

ISO/DIS 14644-3 specifies performance tests for unidirectional and non-unidirectional cleanrooms in the three standard occupancy states (as-built, at-rest, and in operation). There are many tests covered by the ISO/DIS14644-3; Air pressure difference Airflow Airflow direction and visualisation Recovery Temperature and humidity Installed filter system leakage Containment leak Electrostatic and ion generator Particle deposition Segregation The […]

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What is a cleanroom?

A cleanroom is an enclosure that controls the amount of particulate (dust and other contaminants) in the space.  It does this by controlling a number of factors; The build materials and surfaces in the room need to be designed for easy cleaning and to limit the areas that particulate can build up. Controlling the air […]

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Do I need a positive or negative pressure cleanroom?

This depends on what you are trying to protect. Positive pressure cleanrooms protect the process inside the room from any particulate outside the room. Negative pressure cleanrooms protect the user from the process. Clean Environments have a range of rapid assembly positive pressure cleanrooms. In order to maintain positive pressure, you must make sure that […]

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What grade is ISO 5?

There are many different ways of describing an ISO 14644-1 class 5 cleanroom. These can include; ISO 5 cleanroom, grade 5 cleanroom, ISO 5, class 5. ISO 14644-1 class 5 is equivalent to the old US federal standard 209 class 100.  To compare this to the EU GMP standard, Grade A is approximately ISO class 4.5. […]

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Which type of airflow does my cleanroom require?

Laminar Air Flow. ISO 5 (Class 100) and cleaner facilities rely on unidirectional, or laminar, airflow. Laminar airflow means that filtered air is uniformly supplied in one direction (at a fixed velocity) in parallel streams, usually vertically.  Turbulent Air Flow.Cleanrooms up to ISO 6 (Class 1,000) do not require laminar airflow and may utilize a non-unidirectional, […]

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Why does my clean environment need a filter condition gauge?

The filter condition gauge or minihelic gauge is measuring the differential pressure between ambient and the HEPA filter. This pressure reading will increase over time as the filter blocks.  The Clean Environments team will specify your ‘safe range’ on the filter condition gauge; enabling you to accurately assess and maintain your air quality by replacing […]

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