Microbiological Limits of Filtration Systems and the Importance of Disinfection
Conventional air purifiers rely on multi-layered filtration systems to capture physical and chemical pollutants in the air. These filters can retain particulate matter such as PM2.5 and PM10 to a certain extent. Standard HEPA (High-Efficiency Particulate Air) filters can capture particles ≥0.3 µm in size up to 99.97% and can retain limited types of microorganisms within this scope. However, most pathogenic microorganisms are small enough to easily pass through filters. Additionally, microorganisms trapped in the filter can remain viable within the filter structure and can multiply on the filter surface when suitable conditions arise.
Scientific research indicates that live microorganisms accumulated in the filters of standard air purifiers can be dispersed into the air by the airflow movement of the device, increasing the microbial load of the indoor air.
This situation can pose a significant health risk, especially for individuals with weakened immune systems (such as the elderly, infants, children, those with chronic illnesses, and immunocompromised individuals). The re-inhalation of pathogens living and multiplying in filters can lead to respiratory infections and other airborne diseases.
Sterilisa Air: Where Filtration Meets Microbiological Inactivation
Sterilisa Air not only captures particles but also completely inactivates microorganisms before they exit the filter, thanks to its high-tech light-based disinfection module. This approach reduces the microbiological load in the ambient air and eliminates the risk of microorganisms accumulated on the filter surface being re-released with the airflow.
In this way, Sterilisa Air provides true protection that goes beyond conventional air purifiers.
References
Kompatscher, K., van der Vossen, J. M. B. M., van Heumen, S. P. M., & Traversari, A. A. L. (2023).
Scoping review on the efficacy of filter and germicidal technologies for capture and inactivation of micro-organisms and viruses. Journal of Hospital Infection, 142, 39–48.
Szczotko, M., Orych, I., Mąka, Ł., & Solecka, J. (2022).
A review of selected types of indoor air purifiers in terms of microbial air contamination reduction. Atmosphere, 13(5), 800.
