Single Air Pass: Preventing Cross-Infection

Room air exchanges, fan speed, coverage — these are all compelling figures when it comes to determining the performance of a device designed to move air in a given space. In addition, air purifiers — devices designed specifically to eliminate airborne viruses, bacteria, mold, and fungi — need an impressive bioaerosol deactivation rate in order to be truly effective.

But even the most compelling performance figures only tell a small part of the story. Given great decontamination performance and optimal airflow in a space, one question remains:

How many times does a given quantity of air need to pass through a device in order to be truly decontaminated?


The best case is easy to understand: VIRUSKILLER™ deactivates airborne viruses and bacteria in only a single air pass through our Reactor Chamber, the patented decontamination technology at the heart of every VK unit.

In short, contaminated air that moves into our units is immediately disinfected, sending clean, fresh air back into the breathing zone of the room:

Single Air Pass: Preventing Cross-Infection 1

Contaminated air in, clean air out.


Now, consider what happens when a device requires multiple air passes in order to achieve virus-free air:

Single Air Pass: Preventing Cross-Infection 2

Devices that require multiple cycles in order to achieve decontamination have the unfortunate result of sending either partially contaminated air or air that has simply never been decontaminated at all, back into the room — where it can go on to infect or harm occupants.

Even worse — that same, partially contaminated airborne pathogen needs to make its way back into the device, multiple times, in order to be truly sterilised, of which there are no guarantees. This has the ultimate effect of ‘mixing’ contaminated air around the room, which is unacceptable if occupants are expected to be in the space while the unit is active.


VIRUSKILLER™’s ability to filter particulate matter and deactivate viruses and pathogens — and to do so in a single air pass — means the prevention of cross-infection in real-time, reducing the risk of bioaerosol contamination from infected individuals. At all times, the air leaving our units is clean, fresh, and safe for occupants to breathe, offering true peace of mind to those in our shared spaces.

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