The VIRUSKILLER™ Reactor Chamber: Engineered Infection Prevention

Radic8 reactor chamber air sterilization

Contaminated air that comes into contact with VIRUSKILLER™ Reactor Chamber is in for a rough ride. In the first stage of the VIRUSKILLER™ process, air is confronted with a series of ultra-high-end filters consisting of a pre-filter, carbon filters, and generous HEPA filter. This triple filter arrangement effectively traps particulates, irritants and other ultrafine particles that can cause respiratory issues, as well as neutralizing toxic gases and VOCs.

But this is only half the story — filtration alone is not enough where bioaerosols are concerned. Viruses and other airborne pathogens require specialized processes to eliminate, and it is from here that the air moves into our patented deactivation technology — the Reactor Chamber.

The Reactor Chamber is the heart of VIRUSKILLER™ and is the core technology that has been continuously developed and matured to power our world-class air decontamination performance since 2004. The chamber, based around the now well-understood principle of germicidal photocatalytic oxidation, features a number of key design elements that allow it to eliminate viruses, bacteria, and other airborne pathogens in only a single air pass.


First, a quick refresher on photocatalytic oxidation. There are two main components to the process: UV light, and a surface coated in titanium dioxide (TiO2). UV light reacts with the titanium oxide catalyst to produce hydroxyl radicals, which attack the organic compounds in bioaerosols and break them down into trace, harmless amounts of water and carbon dioxide:


The VIRUSKILLER™ Reactor Chamber: Engineered Infection Prevention 1


First, the VIRUSKILLER™ Reactor Chamber features a unique layout of TiO2 filters. These are designed to maximize the active surface area for light to come into contact with and arranged in a layout that ensures air passing through gets as much exposure as possible to the germicidal effect of the reaction.

Second, we know that in our VK units —where we require single air pass performance in large spaces — that one or two UV-C lights are not powerful enough to destroy viruses on a single air pass. A limited amount of UV light means a smaller number of hydroxyls to break down bioaerosols and pathogens, meaning air would need multiple passes in order to become fully decontaminated, thus increasing the risk of contaminated air being sent back into the room.

Instead, we employ a bank of no fewer than eight, premium UV-C lamps which have been engineered to safely operate at much higher power levels than is typical. This ensures optimal coverage of the entire airflow path within the Reactor Chamber.

The VIRUSKILLER™ Reactor Chamber: Engineered Infection Prevention 2

Putting these two together — 70 or more hexagonal TiO2 filters and eight high-power UV-C lamps in our VK units — means we have one-of-a-kind photocatalytic exposure to contaminated air within the chamber. The large amounts of UV light being produced reflect on the surfaces of the tube filters, ensuring complete distribution of germicidal action within the chamber so that no bioaerosols escape alive. This is single air pass performance unlike any other.

And of course, when air is ensured to be clean, fresh, and free from viruses or pathogens when it is sent back into the breathing area of a room, we have a system of real-time protection for occupants, patients, clients, visitors, and family.

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