New filter standard – EN ISO 16890
As of July 1st, dust air filters for ventilation must be compliant with the new filter standard EN ISO 16890, which replace EN 779:2012. All Airmaster air handling units ordered from July 1st will be delivered with filters in compliance with the new standard EN ISO 16890.
The new filter standard is introduced with the vision to create one global filter standard.
The new EN ISO 16890 test method focus on the performance of filtering in proportion to specific particle sizes. The old test method only focused on the efficiency of filtration, without taking into consideration which specific particle size it could filtrate. The new standard makes it more manageable to compare with particulate pollution in other contexts.
Table 1 shows the old classifications for EN 779:2012 compared to the new classifications for EN ISO 16890. It is not possible to translate the new classifications directly, but the table shows how Airmaster translate the classification in proportion to each other.
EN ISO 16890 use new descriptions which classify the efficiency of the filtration in proportion to the particle size.
PM1, PM2,5, and PM10 indicates the particulate matter size in µm. 10 µm is the largest particle and 1 µm is the smallest particle. In front of the PM an e is given (ePM) which indicate the efficiency of the filtration in proportion to the specific particle size and is given in %. For example, a filter which is classified as ISO ePM1 (>55%) capture more than 55 % of particle size 1 µm.
Figure 1 – Particle size of normal occurring atmospheric air pollutants.
Source: Danvak, “Grundbog Varme- og klimateknik, 3. Edition”.