Contamination Control Strategy with Modern Filter Systems: Beyond CADR and Ceiling Coverage

The design and performance of cleanrooms are often evaluated using traditional parameters such as Clean Air Delivery Rate (CADR) or ceiling coverage with Fan Filter Units (FFUs) and terminal housings. However, these metrics alone are insufficient to guarantee robust contamination control and process reliability. Effective cleanroom design must focus on the actual behavior of particles within the room, the critical process zones, and the dynamic interaction between airflow, equipment layout, operator movement and filtration strategies.
This presentation demonstrates, through simulation based analysis, that contamination control is determined not by the quantity of filter modules installed, but by their strategic placement, airflow guidance and the ability to reduce particle loads precisely where they matter most. Using digital airflow and particle dispersion simulations, different cleanroom layouts equipped with FFUs and terminal housings will be compared to illustrate how local contamination hotspots emerge and how they can be mitigated through optimized filter positioning, shielding strategies, zoning concepts and targeted flow patterns.
The results will highlight how modern filter systems can be integrated into a contamination control strategy that focuses on risk based design rather than static metrics. The presentation shows how intelligent use of simulations enhances understanding of real contamination pathways, improves process security, reduces deviation risks and supports compliant GMP/ISO 14644 cleanroom design. Real examples from practical operational scenarios underline how data driven filtration concepts can significantly increase both performance and sustainability.