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EN 779 to ISO 16890 Transition: New Air Filter Efficiency Classifications

JUL 25, 2025 |

Understanding the Transition

In recent years, the air filtration industry has undergone significant changes with the transition from the EN 779 standard to the ISO 16890 standard. This shift marks a pivotal moment in how air filters are classified and assessed in terms of efficiency. Understanding this transition is crucial for both industry professionals and consumers who rely on these filters to maintain indoor air quality.

The Need for Change

The EN 779 standard, which had been in place for decades, primarily focused on classifying air filters based on their ability to capture particles ranging from 0.4 micrometers. While effective, this method had its limitations. With the evolution of technology and a better understanding of air pollution, it became clear that a more comprehensive approach was necessary. The ISO 16890 standard addresses these limitations by providing a more holistic view of a filter's performance.

Key Differences Between EN 779 and ISO 16890

One of the most notable differences between the two standards is how they assess filter performance. EN 779 classified filters into M5 to F9 categories based on test dust loads. In contrast, ISO 16890 evaluates filters based on their ability to capture particles across a range of sizes, specifically PM1, PM2.5, and PM10. This broader approach provides a clearer picture of how a filter will perform in real-world conditions, considering various particle sizes that impact indoor air quality.

Performance Metrics and Testing Procedures

The ISO 16890 standard uses a more detailed and rigorous testing procedure. Filters are now tested for their ability to capture particles under different conditions, including high humidity and varying airflow rates. This provides a more accurate representation of how filters will perform over their lifespan. Additionally, ISO 16890 introduces classifications such as ePM1, ePM2.5, and ePM10, which reflect a filter's efficiency at capturing particles of specific sizes.

Impact on Manufacturers and Consumers

For manufacturers, the transition to ISO 16890 means adapting their products to meet new testing and classification requirements. This could involve redesigning filters or modifying production processes to ensure compliance. While this might pose initial challenges, it also opens up opportunities for innovation and improvement in filter design.

Consumers, on the other hand, benefit from a clearer understanding of filter performance. The ISO 16890 standard provides more relevant information about how well a filter can improve indoor air quality. With this knowledge, consumers can make more informed decisions when selecting air filtration products for their homes or businesses.

Global Implications

The adoption of ISO 16890 has implications beyond individual manufacturers and consumers. It sets a new global standard for air filtration, encouraging consistency and reliability in filter performance worldwide. This is particularly important in an era where air quality has become a significant concern due to pollution and its impact on health.

Challenges and Opportunities

While the transition to ISO 16890 represents progress, it is not without its challenges. Manufacturers may face increased costs associated with compliance and testing, and there may be a learning curve associated with understanding the new classifications. However, these challenges are outweighed by the opportunities for creating more efficient filters that can significantly improve air quality.

In Conclusion

The transition from EN 779 to ISO 16890 is a significant step forward for the air filtration industry. By providing a more comprehensive and realistic measure of filter efficiency, the new standard ensures better indoor air quality and aligns with the growing emphasis on health and environmental sustainability. As the industry adapts to these changes, both manufacturers and consumers stand to benefit from improved air filtration technology that meets the demands of the modern world.

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