The ISO:16890 standard has replaced EN779 in 2018

Filtration efficiency is determined by the classification of particulate matter

ISO:16890 was introduced to the International Organization for Standardization as a new filtration standard for the testing and grading of general ventilation filters, standard number ISO:16980. The standard was voted 100% in 2016 by all countries worldwide. The EN:779 standard to evaluate air filters has been a thing of the past.

In the United States ASHRAE52.2 is the dominant. Europe implements EN779. In Asia and the Middle East, both standards are used. China also has its own national standards. For many years, the World Health Organization and environmental authorities have been using particle sizes to assess air quality, and the industry is now following this approach. With the introduction of the new ISO:16890 test standard, the efficiency of the filter is determined on the basis of classifications such as PM1, PM2.5 and PM10. This ensures that the filter is evaluated more specifically and based on its actual performance. Compared with the previous two major standards, ISO:16980 absorbs the advantages, discards the shortcomings, and proposes a very scientific test standard and grading system. The most significant advantage is that the efficiency test of the filter is required to group the particles, and the efficiency of the filter will be determined by the classification of the particles PM1, PM2.5, PM10.

ISO:16890 Definition
ISO ePM1ePM1,min≥50%
ISO ePM2.5 ePM2.5,min≥50%
ISO ePM10 ePM10,min≥50%
ISO coarse ePM10,min<50%

This will ensure that the filter is more evaluated by its actual operational performance, while helping the user to select the appropriate filter more specifically than in the past. For PM1 particles less than 1um, the new filtration efficiency and efficiency after static elimination, the minimum limit of more than 50% can be assigned to the ePM1 efficiency group. This is important because more and more scientific reports indicate that PM1 as a fine particle is extremely harmful to human health.

What are the differences between the ISO:16890 standard and the old one?

  1. The new test method has higher requirements in many aspects. This puts higher demands on filter performance to better improve indoor air quality and protect human health.
  2. The new test method is closer to the performance of the air filter in real-world applications.
  3. Grading method Filter performance (PM1, PM2.5, PM10) for three different particle size particles.
  4. More importantly, the smallest particle size fraction of the three types of particles, commonly known as PM1, is the ultra-fine particulate matter most harmful to human health.

ISO 16890

What is the significance of the new standard release?

New filter standards are important for air filter manufacturers and users. 1. The new standard aims to improve indoor air quality, protect personnel health, and the entire testing process and grading system are closer to environmental air pollutants. 2. In today’s globalized trade context, a large-scale construction project, the design side, the engineering side and the industry are likely to come from different countries. The global applicability of the new standard eliminates the differences between current standards and eliminates technical barriers to trade. 3. For air filter manufacturers, different manufacturers compete on the same standard platform. 4. For the user, comparing products under the same standard can make more intuitive choices, which is beneficial to product innovation and user benefits, and also helps to eliminate the existence of some low-priced and inferior products on the market.

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