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ISO 16890, the standard for air filters
Based on current knowledge about fine dust
The filter standard ISO 16890 replaced the EN779:2012 standard as of the first quarter of 2017. This ISO standard is a global standard, rather than a European standard, making it easier to compare ISO16890 filters from various international manufacturers. ISO 16890 evaluates the efficiency of air filters at specific particle sizes in a range from 0.3 to 10 Microns.
Test method ISO16890
| Group | ePM1 min | ePM2.5 min | ePM10 min |
| ISO coarse filter | - | - | <50% |
| ISO ePM10 | - | - | ≥50% |
| ISO ePM2.5 | - | ≥50% | - |
| ISO ePM1 | ≥50% | - | - |
As an example:
A filter that captures more than 50% of particles smaller than 2.5 Microns, but less than 50% of particles smaller than 1 micron, falls under the group name ISO ePM2.5. The filter is also labeled with the efficiency at the relevant particle size, rounded down to the nearest 5%. For example, an ISO ePM2.5 filter with an efficiency of 73% will be labeled as ISO ePM2.5-70%.
Fine dust filter standards
Global standards for outdoor air quality (fine dust) are based on the aforementioned PM1, PM2.5, and PM10. ISO 16890 aligns seamlessly with this and makes it easy to select filters that meet the needs and requirements of users. The ISO 16890 standard evaluates and classifies air filters on completely different criteria than the old EN779:2012 standard. Therefore, a direct comparison is not possible.
Curious whether the air quality meets Eurovent 4/23 (WHO) standards and if you are using the right filters according to the ISO16890 standard? We can perform an air quality measurement for you without obligation.
Feel free to contact us for advice on your air quality and selecting the right air filters.