You are using an outdated browser. For a faster, safer browsing experience, upgrade for free today.


Consultancy and measurement services for all aspects of analysis, filter test stands and flow simulation


Consulting and engineering in the development and application of decontamination systems

Product Development

Construction, selection of components, licenses & know-how for the development and sale of decontamination systems

NanoCleanAir offers extensive consulting, engineering, development and measurement services in the field of analysis, measurements and flow simulations of virus and nanoparticles in the air we breathe indoors. The broad scientific know-how of NanoCleanAir as well as the team's decades of international experience in aerosol technology and the understanding of biological processes caused by nanoparticles ensure professional competence and well-founded services.

In 2020 it could be shown experimentally that filter media, which are used in the exhaust gas with a focus on the size range 10-500 nm, are very well suited for the efficient cleaning of viruses from the air we breathe.

Nanocleaner® Filtersystem

The Nanocleaner® filter system (left picture) was developed to clean the air inside vehicles. The vehicle's own ventilation is switched entirely to recirculation, around 10% of the air circulated with it is supplied from outside through the filter. After a few minutes, the air inside the cabin is practically free of particles (right picture). Soot particles are separated with an efficiency of 99%.

Overview of the Services from NanoCleanAir

  • Measurement services through to research contracts in the field of toxicity and the elimination of air pollutants
  • Testing and evaluation of systems with regard to decontamination according to standard procedures
  • Training to understand nanoparticle contamination
  • Analysis of problematic cases
  • Flow calculation, model test and in-situ measurement
  • Advice on the development of new decontamination systems
  • Advice and engineering on the use of existing decontamination systems
  • Construction layout and procurement of key components such as filters and bactericidal or virucidal coatings
  • Licenses for the development and sale of decontamination devices based on the know-how and patents of NanoCleanAir
  • Aerosol measurements: Setup of filter test bench and evaluation with test aerosols
  • Filter efficiency measurements: Development of a test method for checking filter efficiency and other virocidal systems using bacteriophage MS2 as a surrogate virus
  • • Flow calculations and simulations: CFD analysis of the aerosol spread in a lift cabin



Pilot project, classroom

Virus protection in classrooms

  • Prof. Dr. Heinz Burtscher, Institute for Sensor Technology and Electronics at FHNW Windisch, T. Rüggeberg und P. Specht

  • Further information

For a classroom at the Rudolf Steiner School in Lenzburg, a pilot system for virus protection was developed and installed in cooperation between NanoCleanAir (NCA) and the University of Applied Sciences, Northwestern Switzerland. The aim is to create a flow that is as vertical as possible upwards in the room in order to minimize the exchange of air between the learners. 

19.10.2022: Handover of the world's first classroom with highly efficient air purification of fine dust, viruses, bacteria and allergens to the Rudolf Steiner Sonderschule Lenzburg / AG.

Filter efficiency measurements with MS2 bacteriophages

  • Prof. Barbara Rothen-Rutishauser and Prof. Alke Fink
    Swiss NanoAnalytics, Adolphe Merkle Institute, University of Fribourg
  • Publication

The test system designed by the FHNW can be used to determine the filter efficiency of a virus model particle, the MS2 bacteriophage. For this purpose, the MS2 bacteriophages are nebulized in a stream of air and then collected before and after the filter. With this optimized approach, we were able to determine the filter efficiency for the NanoCleanAir®.


Purification of contaminated air from nanoparticles and viruses

  • Prof. Dr. Heinz Burtscher, Institute for Sensor Technology and Electronics at FHNW Windisch
  • Further information

The concentration of soot particles in vehicle cabins is very high. To reduce this, a filter system called "Nanocleaner" was developed, which separates the particles with an efficiency of > 99%. The air coming into the cabin from outside is cleaned.

NanoCleanAir GmbH
Fohrhölzlistrasse 14 b
CH-5443 Niederrohrdorf