Iso 14644-3.pdf Repack

| Aspect | ISO 14644-3:2005 | ISO 14644-3:2019 | |--------|------------------|------------------| | | Included | Removed | | Airborne macroparticle counting | Included | Removed | | Segregation test | Not present | Newly added | | Particle deposition test | Not present | Newly added | | Electrostatic/ionizer tests | Not present | Newly added | | Upstream aerosol concentration range | 10–100 mg/m³ | 1–100 mg/m³ | | Recovery test applicability | Applied generally | Explicitly not recommended for unidirectional flow cleanrooms | | Airflow visualization | Basic guidance | Static + dynamic conditions required (simulate operations) | | Filter leak acceptance criteria | 0.01% | Clarified: 0.01% for H13/H14; 0.1% for MPPS 99.95–99.995% | | Annex on test selection | Limited | Enhanced checklist and selection guidance | | Correlation to classification | ISO 14644-1 referencing | Explicit reference to ISO 14644-1:2015 |

ISO 14644-3:2019 represents the of this critical standard. Understanding what has changed is essential for organizations transitioning from the older 2005 version. Iso 14644-3.pdf

The terminology and methodologies for HEPA and ULPA filter scanning were updated to align with newer instrumentation capabilities. | Aspect | ISO 14644-3:2005 | ISO 14644-3:2019