Safe UV Disinfection
Care222 is a system which selectively kills bacteria and inactivates viruses without damaging human cells/tissues using narrow-band spectrum UV when used within the current exposure limits recommended by the American Conference of Governmental Industrial Hygienists (ACGIH®) or the requirements of IEC 62471.
Traditional Far-UVC light used for disinfection is harmful to human skin and eyes
222nm filtered UVC light is proven to be safe for use in the presence of humans
Care222™ is a new disinfecting light source that, even though not harmful to the skin or eyes of humans or animals, deactivates bacteria and viruses in the same manner as conventional ultraviolet sanitisers.
It can be installed in a high location, such as on the ceiling, to irradiate its entire surroundings. This makes it possible to deactivate or eliminate a wide variety of viruses and bacteria both in the air and on environmental surfaces.
One of Care222™’s greatest features is that it can be used all the time. Unlike conventional ultraviolet light sources, Care222™ can be used even when people are present, allowing continuous disinfection of the air and environmental surfaces.
Care222™ uses an excimer lamp (a mercury-free UV excimer light source produced especially for outputting monochromatic ultraviolet with a primary wavelength of 222 nm) in combination with a special optical bandpass filter (200 to 230 nm) which passes only ultraviolet wavelengths that have no harmful effect on people.
Generally, ultraviolet light has the deserved reputation of being harmful to humans. Beyond 230 nm, UV light has enough intensity that it is able to penetrate the epidermal layer of skin and cause molecular changes in the layers beneath. UV wavelengths between 200 nm and 230 nm are unable to penetrate the top layer of skin and simply inactivate any bacteria or viruses that may be present on the surface.
Care222® devices emit far UV-C radiation at a peak wavelength of 222 nm. 222 nm UV light possesses a rather shallow penetration depth, which means the radiation cannot pass through the stratum corneum epidermal layer of skin and is, therefore, unable to cause molecular mutation in the deeper stratum spinosum epidermal layer – unlike conventional 254 nm UV lamps. Prolonged exposure to 254 nm ultraviolet radiation causes cellular mutation in the deeper epidermal layers, which is where new skin is being formed. Damage caused to the genetic material in this region presents a highly elevated risk of developing skin cancer.