Efficient and Safe for Use in Hospital Environments for High-level Disinfection
Ultraviolet (UV) light is a form of light, invisible to the human eye, that exists on the electromagnetic spectrum between X-rays and visible light. We are exposed to low levels of UV light from the sun’s rays every day, although much of the UV energy is absorbed by the ozone layer.
There are three UV light wavelength categories: UVA, UVB and UVC. UVC IS the only wavelength known to be germicidal. UVC utilizes short-wavelength ultraviolet radiation (shorter than UVB and UVA, which are NOT germicidal) that is harmful to microorganisms.
UVC wavelengths are between 200 and 300 nanometers, making them germicidal – meaning they are capable of inactivating microorganisms, such as bacteria, viruses and protozoa. QCE makes UVC energy an effective, environmentally-friendly and chemical-free way to prevent microorganisms from replicating in any environment.
UVC wavelengths are between 200 and 300 nanometers, making them germicidal – meaning they are capable of inactivating microorganisms, such as bacteria, viruses and protozoa. QCE makes UVC energy an effective, environmentally-friendly and chemical-free way to prevent microorganisms from replicating in any environment.
The high energy from short wavelength UVC light is absorbed in the cellular RNA and DNA, damaging nucleic acids and preventing microorganisms from infecting and reproducing.
Ultraviolet (UV) light does not kill microorganisms in the same way chemicals does. The light damages DNA inside the cells of an organism, eventually deactivating the function of each cell. Evidently, genetic material readily absorbs UV rays at a specific wavelength of 254 nm.
UV light of this wavelength initiates a reaction which produces two molecules of thymine - one of the building blocks of DNA. The molecules bind the internal steps of DNA, preventing a base pair from forming.
The rays are detrimental to microorganisms but are relatively harmless to humans in low exposures.
Humans should certainly avoid entering the same room as the trolley when it is activated, but the rays are not powerful enough to penetrate glass windows, so rooms only need to be temporarily evacuated.
For human beings, skin exposure to germicidal wavelengths of UV light can produce rapid sunburn and skin cancer. Exposure of the eyes to this UV radiation can produce extremely painful inflammation of the cornea and temporary or permanent vision impairment up to and including blindness in some cases. UV can damage the retina of the eye.
Another potential danger is the UV production of ozone, which can be harmful to one's health. Lamps designed to release UVC and higher frequencies are doped so that any UV light below 254 nm wavelengths will not be released, to minimize ozone production.
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