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Study finds air purification systems can reduce airborne pathogens by around 50%

By 11/02/2021No Comments

Airborne pathogens in an office environment can be significantly reduced by the use of effective air purification systems according to a new study undertaken by The University of Lincoln.

The report, commissioned by Intratek, providers of some of the world leading air purification systems, has found that the levels of airborne micro-organisms can be reduced by around 50 per cent with an effective air purification system.

This project was fully funded by The Productivity Programme for Greater Lincolnshire which is a European Regional Development Fund Programme.

The independent investigation by the University of Lincoln into the efficacy of Intratek’s biocidal air handling unit looked at differences in the levels of microbial growth between treated and untreated air.  The University’s scientific team found statistically-significant differences when the air handling unit was operational and concluded that, on average, bacterial counts dropped by half and fungal counts reduced by around two thirds when the unit was in an office location.

The report is of particular significance considering the threat posed in the workplace by airborne pathogens, including respiratory viruses such as Covid-19, although reductions in viral particles were not tested as part of the University of Lincoln’s study.

The law requires employers to ensure an adequate supply of fresh air in the workplace as well as good ventilation.  This, coupled with social distancing and frequent handwashing, are some of the key measures employers need to introduce if they are to reduce the risk of spreading coronavirus in the workplace.

Good ventilation reduces the concentration of pathogens in the air and therefore reduces the risks from airborne transmission. This happens when people breathe in small particles (aerosols) that can be present in the air after someone with a virus has occupied an enclosed area.  During the cold winter months, providing adequate ventilation can pose challenges in keeping employees warm.  Using an effective air purification system can help provide clean air without the cold.

Matthew Alexander, Director at Intratek, commented “This research should be a welcome boost for businesses looking to provide a safer worker environment for employees. The government’s advice on ensuring clean air helps reduce the risk of pathogens spreading and our air purification systems are now proven to remove microorganisms from air in a real world office environment.” 

In the study, air treated by Intratek’s biocidal air handling unit was tested twice daily over a 22 day period. The report concluded that there was an, “Overall reduction seen in bacterial and fungal counts as a function of air handling. This has led to an overall reduction seen in bacterial / fungal counts taken from an office environment”.


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