Far UV-C Technology
Be glad you're not a Superbug!
Ultraviolet Applications for Microbial Bioburden Reduction
The Sun bathes the earth in a wide range of electromagnetic radiation. Some we can see, some we cannot see. The wavelength of this radiation is measured in "nanometers" which is the abbreviated as "nm." To put this into perspective; a meter is about 39.37 inches long. A nanometer is one billionth of a meter. It is so small that it is invisible to the human eye. An amazing ability of the human eye is the fact that the 400nm to 700nm range of electromagnetic radiation surrounding us, can be detected by our eyes and is commonly called "Visible Light."
What is Ultraviolet?
Without getting too technical, ultraviolet is a specific range of the Sun's electromagnetic radiation whose measurement falls in the 100nm to 400nm wavelength. It is invisible to our eyes. Everything above 700nm, e.g. Infrared is also invisible to us.
Ultraviolet radiation is further broken down into UVA (315nm to 400nm), UVB (280nm to 315nm), and UVC (100nm to 280nm). Radiation in these ranges can be ionizing and capable of damaging your eyes, skin and nasty pathogens. According to the World Heath Organization all UV-C radiation is absorbed by the atmosphere. The UV radiation reaching the earth's surface is mainly composed of UV-A and a small amount of UV-B. Which is why we need sunglasses, sunscreen and clothes.
Ultraviolet Germicidal Irradiation is a decontamination method that relies on shorter wavelength UV radiation (185nm to 254nm), to disrupt the DNA of pathogens, inactivating them and their intended effect. Since the UVGI process typically uses lamps that generate radiation near or close to 254nm it is mandatory to protect humans from exposure. UVGI has been safely and effectively used for decades in air, water and food processing.
What has changed with Ultraviolet UVGI to be considered a Breakthrough Discovery?
The Columbia University Center for Radiological Research discovered that a specifically engineered type of lamp delivering filtered Far UV-C at a wavelength of 222nm would safely and effectively reduce the bioburden of superbugs like Coronavirus and other pathogens, in spaces occupied by humans. This is truly a game changer if used within the current exposure ACGIH recommendations and IEC requirements. Scientific studies indicate this wavelength cannot penetrate the dead-cell layer at the surface of our skin, nor can it penetrate into our eyes enough to reach the cornea, avoiding damage to any living cells. But it can inactivate airborne or surface germs by disrupting their DNA and RNA. An added benefit is pathogens inactivated by utraviolet light do not mutate and become immune to this process. (1)