As a spin-off from the Helmut Schmidt University Hamburg, we attach great importance to objective data and external studies. That is why we only use the best HEPA H14 filters in our room air purifier and focus on a high volume flow. In this way, our room air purifier can reliably reduce the risk of infection with viruses, bacteria and the like. We have put together an overview of our sources for you here.

1) Federal Center for Health Education. (2021, January 19). Contagion and Transmission. Retrieved online from: Answeren/ansteckung-und-uebertragung.html#faq3760 (last accessed on March 14, 2021).

2) Kähler, C. J., Fuchs, T., & Hain, R. (2020). Can mobile air purifiers effectively reduce an indirect SARS-CoV-2 risk of infection from aerosols. Ed. University of the Federal Armed Forces Munich. Fluid mechanics and aerodynamics. Retrieved online from: (last accessed on February 18, 2021).

3) American Society of Heating, Refrigerating and Air-Conditioning Engineers. (2020). Ventilation of Health Care Facilities (ANSI / ASHRAE / ASHE Standard 170-2017). Retrieved online from:

4) Curtius, J., Granzin, M., & Schrod, J. (2021). Testing mobile air purifiers in a school classroom: Reducing the airborne transmission risk for SARS-CoV-2. Aerosol Science and Technology, 1-18.

5) German Society for Hospital Hygiene (2015) Hospital hygiene guideline for the planning, implementation and operation of ventilation and air conditioning systems in health care rooms. Hyg Med 2015; 40 - 12

6) German Society for Hospital Hygiene (2002) Draft guidelines: Implementation and operation of ventilation and air conditioning systems (RLT systems) in hospitals. Hyg Med 27th year 2002 - issue 3

7) Robertson, P. (2019, Aug. 20) Can HEPA Filters Capture Nanoparticles? Clean Air Blog.

8) Robertson, P. (2021, Jan. 01) Can HEPA Filters and Air Purifiers Capture the Coronavirus? Clean Air Blog.

9) Perry, J. L., Agui, J. H., & Vijayakimar, R. (2016). Submicron and nanoparticulate matter removal by HEPA-rated media filters and packed beds of granular materials .. Retrieved online from: (last accessed on February 18. 2021)

10) Kowalski, W. J., & Bahnfleth, W. P. (1998). Airborne respiratory diseases and mechanical systems for control of microbes. HPAC Heating, Piping, Air Conditioning, 70 (7).

11) Johnmin. (2020, August 2nd). How do UV Light Air Purifiers Work and Can They Kill Viruses? Clean Air Blog.

12) World Health Organization. (2016, March 9th). Radiation: Ultraviolet (UV) radiation.

13) United States Environmental Protection Agency. (2018). Residential Air Cleaners - A Technical Summary (EPA 402-F-09-002) .. Retrieved online from:

14) Centers for Disease Control and Prevention (CDC). (2019). Guidelines for Environmental Infection Control in Health-Care Facilities. Retrieved online from:

15) Medical Advisory Secretariat. (2005). Air cleaning technologies: an evidence-based analysis. Ontario health technology assessment series, 5 (17), 1.

16) Exner, M., Walger, P., Gebel, J., Schmithausen, R., Kramer, A., & Engelhart, S. (2020). For the use of decentralized mobile air purification devices as part of the prevention of COVID-19. Statement by the German Society for Hospital Hygiene (DKKH). Bonn.

17) Society for Aerosol Research (2021, April 11th). Contagion risks from an aerosol scientific perspective. Open letter to the federal government. Retrieved online from: (last accessed on April 20, 2021).