Continuous exposure causes uninterrupted degradation, such as the sun does, only faster. The subsequent loss of genetic instructions causes cell death and also the inability to replicate. In less than a second it suffers irreparable damage. A microbes DNA is first to be adversely effected due to its weaker molecular bonds. Microorganisms are simple organic structures that readily absorb the UVC wavelength, causing photo-disassociation, which is destruction. UVC penetrates superficially and has not been associated with long term tissue effects. It is important that sunscreens block both UVA and B. There is no good clinical measurement of UVB blocking. It penetrates deeply but does not cause sunburn. Generally, UVA is least harmful UVB contributes to DNA damage and cancer. UVA, UVAB and UVAC will damage collagen fibers and accelerate skin aging. It helps to tan our skin and is used in medicine to treat certain skin disorders. UVA is more predominant outdoors than the other two. Prolonged exposure has been associated with skin cancer, skin aging, and cataracts. UVB is a narrower but more dangerous band of UV. Human overexposure causes temporary skin redness and harsh eye irritation, but no permanent damage, skin cancer, or cataracts. UVC includes the germicidal wavelength of 253.7nm and is used for air and water disinfection. The "C" frequency of the electromagnetic UV family has, amongst other things, germicidal effects.Įxcessive UV exposure can produce adverse effects depending on wavelength, type and duration, and UV response differences between individuals. Like other waveforms, its properties are unique to its wavelength. UVC is one of many electromagnetic frequencies emanating from the sun. Mail Box Deliveries, Pillows, Toilets, Tooth Brushes. Head Phones, Lunch Pails, Masks, Mattress & Bedding, Kitchen Cutting Boards, Hair Brushes & Combs, īaby's Cribs, Bathroom Sinks, Car Steering Wheel,Ĭell Phones, Computer Keyboards, Computer Mouse,ĭelivered Packages, Door Knobs, Eye Glasses, The UV Spectrum Of Light, specifically UVC 250nm levels can disinfect a multitude of germs.Īs in Bacteria, Fungus, Mold and Viruses (Covid & Sars, Kills Up To 99.9%). UV UVC Light Disinfectant Germicidal Products UVC Kills Bacteria, Fungus, Mold, Viruses & Germs (Note: While UVC rays from artificial sources can also pose risks including burns of the eye and skin - similar to UVA and UVB rays - the FDA upholds that these injuries “usually resolve within a week” and that the chance of developing skin cancer “is very low.Better Living With Light ► 99.9% Disinfection Here’s why: when emitted at certain wavelengths and for specific amounts of time, UVC light can damage the genetic material - DNA or RNA - in bacteria and viruses, inhibiting their ability to replicate and, in turn, causing their normal cellular functions to break down, explains Chris Olson, microbiologist and program manager of Infection Prevention and Emergency Preparedness at UCHealth Highlands Ranch Hospital. So, when talking about UV light disinfection, the focus is on UVC, says Malley. Still, it’s pretty damn impressive UVC, which has the shortest wavelength and the highest energy of all the UV radiation, is a known disinfectant for air, water, and nonporous surfaces. UVC rays, on the other hand, never actually make it to the Earth’s surface (the ozone layer blocks ’em), so the only UVC light humans are exposed to is artificial, according to the FDA.
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