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Breathe deeply in the classroom

Nuremberg, June 2021

In order to minimize the risk of infection in classrooms and thus make teaching possible in the first place, various measures are being implemented to reduce aerosol exposure.

Unfortunately, pure ventilation has proven to be less effective in practice, especially when you consider the associated disruptive factors, such as noise, fine dust or pollen from outside. If ventilation is possible at all. The situation is even more problematic in rooms where no windows can be opened.

Aim of the study

One of the most effective methods is the use of air purification devices. The IGR wants to conduct a broad-based field study to find out how this technology can be used under real conditions.

  • Do handling and ongoing operation prove themselves in practice?
  • Can lessons be held without disruption?
  • Is the operation and maintenance comprehensible and user-friendly?

Scientific background

According to experts such as Dr. Sauter from the Institute for Aerosol Research, filter efficiency in particular is crucial for significantly reducing the risk of infection if the concentration of viruses, allergens and particulate matter in the air is to be significantly reduced.

With the aim of minimizing the risk of infection in group rooms (and thus protecting pupils, teachers and school staff), this requirement must be met. This means that a high filter efficiency of at least 99.995 % should be ensured by the high separation efficiency of a high-performance filter, e.g. the HEPA high-performance filter H14 in accordance with the industry standard. Our study partner, KRIEG Industriegeräte GmbH & Co. KG, is supporting us with a test device that meets these technical requirements in order to accompany the study as an example.

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