ISO 14644-1 cleanliness classes, explained simply
What do Class 5 to Class 8 mean? How is each class's particle limit calculated, and which class is enough for your application?
Read moreCLEANROOM ENCYCLOPEDIA
Cleanroom Knowledge Base
Articles, technical notes and updates from the KGS engineering team on cleanrooms, hygienic HVAC, validation and standards.
About the encyclopedia
The Cleanroom Encyclopedia is where the KGS technical team regularly publishes practical knowledge: from interpreting standards and test methods to operation and maintenance tips. Articles are listed by publication date and can be added and edited through the content management panel.
Latest articles
The newest posts appear at the top of the list.
HEPA filter leak testing (DOP/PAO): why and how
The filter integrity test is the most important cleanroom acceptance test. We review the procedure, the equipment required and the acceptance criterion.
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Pressure cascades in cleanrooms: design principles and common mistakes
Where does the 10–15 Pa differential between adjacent rooms come from, and why should it not be pushed too high?
Read moreTalk to the KGS technical team about your project
Tell us your requirements, the standard you work to and the capacity you need; the KGS engineering team will walk through the proposed approach with you.