The Chief Sanitary Inspectorate (GIS) lists UV radiation as one of the methods of fighting the SARS-CoV-2 coronavirus - ultraviolet light it destroys its thin lipid layer.
Discovered in the 19th century, a type of "invisible" light, the energy of which is greater than that of visible light, but much less than that of gamma rays or X-rays, was named ultraviolet radiation, or UV for short.
Ultraviolet radiation is defined as electromagnetic radiation in the wavelength range from 100 nm to 400 nm .This radiation is divided into three sub-ranges:
- near ultraviolet (UVA) with a wavelength range between 315 nm and 400 nm,
- medium ultraviolet (UVB) wavelengths of 280-315 nm,
- far ultraviolet (UVC) with wavelengths between 100 nm and 280 nm
All these types of ultraviolet are emitted by the sun. UV-C does not penetrate the Earth's atmosphere, UV-B penetrates in small amounts, and UV-A reaches us in the highest doses (97% of ultraviolet reaching the Earth's surface).
Proper sterilization of rooms is a very important aspect. Currently, one of the simplest and, at the same time, the most effective methods is the use of lamps that emit ultraviolet radiation.
Germicidal lamps are successfully used in hospitals, offices and outpatient clinics. Currently, as a result of an increased epidemiological threat, UVC lamps (fittings) are used wherever there is a larger group of people or frequent rotation of people. Such places are all offices, customer service points, Satan, cinemas, theaters, transport of people, schools and universities, receptions, canteens. UVC disinfection is also used in the food industry to remove bacteria and viruses from e.g. poultry eggs, instead of pasteurizing milk. UVC light is also used to disinfect water, sewage and containers requiring a sterile environment.
By using short wavelength ultraviolet light (UVC, 100-280 nm) in LED technology, disinfection is targeted at a specific surface. UVC light, by penetrating through bacterial cell membranes and viral capsids, damages the structure of DNA and RNA, which prevents protein synthesis and, consequently, reproduction and virulence. It is a disinfection method with up to 99% efficiency, which means it is as effective as the disinfectant liquid.
On the market you can find direct contact lamps, flow lamps, dual-function flow lamps. The highest disinfection efficiency on the surface is proven by tests in the case of direct contact lamps.
A technological breakthrough in the use of UVC in the fight against bacteria and viruses is the introduction of luminaires in LED technology. The key benefits of UVC LED technology are a drastic increase in safety for people and convenience in use. Luminaires and UVC lamps in LED technology do not generate ozone during operation, which is harmful to people. As a result, rooms disinfected with bactericidal and virucidal luminaires do not require airing (ozone removal). The second element is the increased durability of the UVC LED for the "on" and "off" cycle, thanks to which there is no need to replace radiators or bulbs. In this way, we obtain virucidal and bactericidal luminaires that do not require maintenance for a minimum of 5 years.
ADVANTAGES OF UVC TECHNOLOGY
UV devices are compact, easy to use and do not require special safety measures.
Traditional UVC llamas
UVC lamps in LED technology
No ozone production harmful to humans
The lifetime of the radiation source
approximately 8,000 hours
approximately 50,000 hours
No annual replacement of the UVC radiation source
Increased endurance for the "on" and "off" cycle
Free from elements harmful to humans (mercury, lead)
Modern and aesthetic frames.
UV-C devices are safe, provided they are used by trained professionals who are knowledgeable in their operation. While using, protect your eyes and skin to avoid serious injury.
Wavelength 270-280 is very effective UV wavelength in terms of decontamination of viruses, bacteria and fungi.
Ozone, of course, is part of the atmosphere, but only in its upper layers. It reaches the lower ones only occasionally (e.g. after a thunderstorm as a result of lightning), and in very small doses. Higher concentrations could damage our biological membranes, causing inflammatory eye reactions and respiratory disease. That is why rooms disinfected with the use of older radiators, which apart from UVC emit ozone, must be thoroughly ventilated after their use. It is even better to be interested in a solution that does not produce harmful ozone, i.e. a UVC solution in LED technology.