Air and Surface Virus Neutraliser
Combining the power of UVC, HEPA and
Ozone to give the air and surfaces in
your building extra safety from viruses
The React-Air Expanse is a portable air and surface steriliser designed for use in commercial environments. Using a UVC technology, the powerful fans drive the airflow through the decontamination chamber, neutralising bacteria, viruses, pollen and odours, delivering clean and sterile air to a room.
The Expanse is also a powerful ozone generator, which can be set to activate when a room is unoccupied, filling the environment with ozone gas. When the ozone comes in to contact with items and surfaces, it eradicates viruses and bacteria, sterilising everything it touches. UVC and Ozone technology has been used for many years to sterilise hospitals, operating theatres and surgical instruments. Air Flow, Ozone Release and UVC Dose can be controlled using the UVC touch screen. The Expanse also contains a powerful sensor array which monitors Air Exchanges, Air Quality and UVC dose, which can be set to neutralise different types of viruses. This information is displayed on the screen when in operation to give your building users extra peace of mind.
Air Sterilisation using UVC and HEPA Technology
The Expanse draws air into its extraction vents which are specifically located at shoulder height, so as to capture as many virus particles as possible. The air then passes through a medical-grade HEPA 13 filter, trapping any larger contaminants, and finally through a high intensity UVC chamber, capable of delivering a dose of over 240J/M3. The high power, variable fan can circulate up to 2000 metres cubed of air per hour - enough to give 9 air cycles per hour in an average 50 person office space.
Advanced Monitoring Technology and
Cloud Based Online Systems
Advanced Surface Sterilisation with Ozone Technology
The Expanse contains 4, high powered ozone discharge plates which operate as a separate function from the air cleaning UVC technology. Ozone can be harmful if inhaled so the Expanse can be set, by an authorised user with a password, to be released when the room is empty. This can be set on a timer function and an audible and visual warning is given before ozone is dispersed, with an emergency shutoff feature, should anyone still be in the room. Once the ozone cycle is complete, the Expanse switches back to UVC mode to eliminate any trace ozone, faster than it’s natural half-life conversion back to oxygen.
The conveniently tilted touchscreen control of the Expanse can be used to set fan speed, UVC dose and adjusted to neutralise different types of bacteria and viruses from the air.
The Expanse also contains a complex sensor array which actively monitors Air Quality (AQI) and air exchanges within the room it is placed. This information is synced wirelessly with our cloud platform so that information is always available to building managers, across multiple units and multiple sites.
The touchscreen can also be set to display this data. This is highly effective for creating peace of mind for building occupants, delivering air cleaning that can actually be seen in real time, on each Expanse unit.
The data is available through our React-Air mobile app and on our online web-based app, delivering confidence that you are meeting your duty of care.
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How effective are our React-Air products against coronavirus?
Since coronavirus (covid-19) is a new virus, testing products specifically against this strain is not possible. Any company claiming that their air steriliser is guaranteed to eliminate Covid-19 must be able to back this up with evidence. Studies by The University of Boston undertaken in 2020 have shown that Covid-19 is highly susceptible to UVC light. Japanese scientists have been conducting studies on the effects of ozone in neutralising Covid-19 on surfaces and have shown it to be highly effective with a 90% sterilisation rate. This information, published by research.net shows the results and effective dosages of UV-C light required to inactivate various strains of coronavirus.
“Table 1 above summarises the results of studies that have been performed on Coronaviruses under ultraviolet light exposure, with the specific species indicated in each case. The D90 value indicates the ultraviolet dose for 90% inactivation.
Although there is a wide range of variation in the D90 values, this is typical of laboratory studies on ultraviolet susceptibility. The range of D90 values for coronaviruses is 7-241 J/m2 the mean of which is 67 J/m2, should adequately represent the ultraviolet susceptibility of the SARS-CoV-2 (COVID-19) virus.”
By using this exposure data, and comparing the UV light irradiance measurements from our products, we calculate the exposure times required to deactivate coronaviruses. This is however, a calculation and currently is not backed up by laboratory tests.