Cleanroom Airborne Particulate Testing and Validation


Cleanroom Airborne Particulate Testing and Validation

The whole ‘cleanroom’ process environments must remain consistently clean, so merely filtering the factory’s air is inadequate. To minimise particle contamination it is important to build separate environments, called cleanrooms that allow particle limits to be maintained at measurable and controllable levels. It is essential that cleanrooms are tested in-line with ISO 14644 to ensure they are working as designed.




Cleanrooms achieve these great cleanliness levels by maximising laminar airflow and particle traps. Laminar airflow is air moving in one direction, which allows particles to be swept away from an area. Particle traps are areas where particles gather and escape laminar airflow. Careful cleanroom designs can minimise these areas to reduce particulate build up.

In efficient cleanrooms, filters installed in the ceiling allow filtered air to pass down toward the floor. The floor tiles have small holes that allow the air to pass under the floor, where air-returns (air ducts) transport the air back to the ceiling filters. This filtration process can exchange the cleanrooms entire volume of air more than thirty times per hour, resulting in the cleanest environment possible while minimising the movement of particles.

To further reduce the chance of contamination it is essential that personnel wear protective gowns, hair and beard covers, hoods, overshoes, and gloves. Cleanroom apparel is extremely important in micro-contamination control to contain the particles emitted by personnel.

Clean room testing and certification guarantees that the facility has met the requirements for a statistically-valid maximum concentration of specified-size airborne particles. 

APT Sound Testing can undertake all your cleanroom testing requirements to ISO 14644-1:2015 - Classification of air cleanliness by particle concentration and ISO 14644-2:2015 - Monitoring to provide evidence of cleanroom performance related to air cleanliness by particle concentration.

We provide a friendly professional cleanroom validation service to the requirements of all current ISO standards and guidelines. We will issue you with test certificates containing up-to-date calibration certificates for all of the equipment used as well as recommendations for improvements that could be made to make the clean room more efficient in regards to its operation.

For more information visit our website at www.aptsoundtesting.co.uk or call us on 01525 303905 to discuss your annual cleanroom validation testing, alternately please email info@aptsoundtesting.co.uk


Location: Clapham Town, London SW4 0QU, UK

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