- BuildingDesign News - Construction / Services News Archives

Featured Video - Zehnder - 14th August 2018

Zehnder Original Filters & the New ISO 16890 Standard

Zehnder original filters and the the new ISO 16890 standard

Did you know that we inhale up to 15kgs of air every day? The air we breathe contains various particles which, if small enough, may reach our respiratory system and blood stream, causing health complications.

The new standard, ISO 16890 (ISO), takes over from the previous standard EN 779, and is said to be a realistic assessment of filter performance.

ISO now divides filters into four classes. In order to be assigned a category, a filter must separate at least 50% of the respective particle size, giving a more precise indication about which particles will be filtered from the air.

Filters are classified as:

  • ISO Coarse: Ability to filter particulates greater than 10μm in size. This includes larger particles such as sand, fluff, flying seeds or fine hair.
  • ISO ePM10: Ability to prevent particles between 10μm to 2.5μm in size. Smaller than ISO Coarse particulates, they typically come in the form of pollen, stone dust or agricultural dust.
  • ISO ePM2.5: Prevent even smaller sized particulates, less than 2.5μm in size; bacteria, fungi, mould spores, pollen or toner powder are all able to be filtered out.
  • ISO ePM1: The most effective filter, having the ability to prevent viruses, bacteria, nanoparticles, soot, air-borne sea salt, oil mist or other particles smaller than 1μm from penetrating through the filter.

In practical terms, this means that Zehnder’s ComfoAir Q is now categorized as ISO ePM1 ≥ 50% and not as F7.

Additional Information Relating to Zehnder

Zehnder Logo
BuildingDesign Media © - Hill Farm Business Park, Linton Hill, Maidstone, Kent ME17 4AL, Tel: 01622 745333