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Published Research
UV222 Published Research
Far-UVC light at 222 nm has attracted global interest as a safe and effective technology for reducing harmful microbes in air, on surfaces, and even in clinical settings. Unlike conventional UV-C light, 222 nm far-UVC can inactivate viruses, bacteria, and fungi while remaining safe for human skin and eyes.
This page brings together peer-reviewed research and independent studies that explore the effectiveness, safety, and real-world applications of UV222 technology. Each section below highlights published studies, with links and short descriptions for quick reference.
Safety & Health Impact
222 nm Light Effective in Occupied Spaces
This study evaluated the effectiveness and safety of far-UVC (222 nm) light in reducing transmission of viruses (including coronaviruses) in occupied indoor settings and found promising virus inactivation with minimal harm to humans.
Review Confirms Far-UVC Safety & Effectiveness
This paper reviews evidence showing that far-UVC (around 222 nm) light can safely deactivate airborne viruses and microbes, making it a promising tool for reducing infection risk in occupied indoor spaces.
Far-UVC Shown Safe for Eye Tissues
The researchers exposed rats’ eyes to both 222 nm and 254 nm UV light and found that 222 nm caused no corneal damage, whereas 254 nm led to visible damage, suggesting 222 nm is much safer for eye tissues.
Far-UVC Safer Than Sunlight for Skin Cells
A computer modelling study suggests that far-UVC (around 222 nm) causes dramatically less DNA damage (in the form of cyclobutane pyrimidine dimers) in skin cells than typical sunlight exposure—even under different climate scenarios.
Bacteria, Wounds & Antimicrobial Resistance
Far-UVC Effective Against Resistant Bacteria
This paper shows that far-UVC (around 222 nm) light can kill bacteria (including drug-resistant ones) without noticeable damage to human skin, making it a promising disinfection method for use around people.
Far-UVC Eliminates 99.8% of Airborne Virus
In a real-world test in an occupied room where mice cages are cleaned, 222 nm far-UVC light cut the level of infectious airborne virus by about 99.8% — nearly eliminating it.
Far-UVC in Wound Care: Gentle & Effective
The paper discusses clinical experiences using 222 nm far-UVC in wound care and explores how it might safely reduce infections while being gentle on human skin.
Hospital Study Confirms Far-UVC Effectiveness
In a hospital waiting room, 222 nm lamps significantly cut bacterial counts on surfaces and in the air.
Far-UVC: A Safer Solution to Drug-Resistant Infections
This review evaluates evidence suggesting that 222 nm far-UVC light can kill dangerous bacteria (including MRSA) in hospitals while being safer for human skin than conventional UVC, making it a promising tool against drug-resistant infections.
222 nm Light Kills Microbes Without Skin or Eye Harm
This study demonstrates that far-UVC light (around 222 nm) can effectively kill microbes (like bacteria and viruses) in air and on surfaces without causing harm to mammalian skin or eyes.
Airborne Virus & Infection Control
Three-Year Far-UVC Study in Long Term Care Facilities
This trial is testing whether installing 222 nm “far-UVC” light devices in common areas of long-term care homes can reduce respiratory viral infections compared to placebo lights, over a three-year period. In conclusion -Far-UVC light offers a low maintenance, passive intervention to mitigate the spread of RVIs in LTC facilities.
Indoor Air Effects of Far-UVC in Hotels
The researchers tested using 222 nm far-UVC lights in a hotel quarantine setting and found that turning on the lights led to small increases in indoor ozone levels (though still below outdoor levels) but did not clearly affect ultra-fine particle concentrations.
Far-UVC Cuts Airborne Bacteria by 90%
In a room-scale experiment using filtered 222 nm far-UVC lamps, the researchers showed they could reduce airborne bacteria (Staphylococcus aureus) by over 90% under safe exposure levels in just minutes.
Far-UVC Achieves 98.4% Reduction of Staphylococcus
In a room-sized experimental chamber, filtered 222 nm far-UVC lamps reduced airborne Staphylococcus aureus by about 98.4% (while operating within safety exposure limits), showing strong potential for inactivating airborne pathogens.
Far-UVC Proven Effective Against Coronaviruses
This research showed that 222 nm far-UVC light can deactivate coronaviruses in the air, while being safe for humans.
Broad-Spectrum Disinfection with 222 nm Light
This research demonstrates that 222 nm UVC is effective at inactivating a broad range of viruses, bacteria, and other microbes.
Environmental & Technical Factors
Far-UVC: A Safer Tool for Pandemic Control
This review argues that far-UVC (200–230 nm) light is a promising way to kill airborne pathogens while being much safer for human skin and eyes compared to conventional UV-C.
Mapping UV Wavelengths for Pathogen Disinfection
This work maps how effective different UV wavelengths are at killing microbes, aiding in validation of disinfection systems.
Reviews, Guidance & Perspectives
New UV Light Keeps Indoor Air Clean
An overview article discussing how new 222 nm UV technology could make indoor air safer by continuously disinfecting in occupied spaces.
Guidance on UV-C Standards in Healthcare
This piece offers guidance and viewpoints on how to standardize UV-C disinfection practices in hospitals.