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What's the difference between UV-C and Far-UVC? <br />Page 2 of 5 <br />Most traditional UV-C products (like low pressure mercury lamps) use energy from the 254 nm <br />wavelength because scientists found it the most effective. UV-C LEDs, which are relatively <br />new to the market, are generally 260 to 280 nm. Other products use broad spectrum UV <br />(https:/linsights.regencylighting.com/does-all-uv-light-kill-germs) , which is a combination of <br />wavelengths found in UV -A, UV-B, and UV-C ranges. <br />Recently, scientists found UV-C light can kill SARS-CoV-2 <br />(https://insights.regencylighting.com/uv-light-proven-to-kill-covid-19) , the virus that causes <br />COVID-19. More businesses have started to add UV-C products to protect their employees, <br />tenants, and customers. <br />Pros of UV-C <br />Fast disinfection — UV-C products can inactivate pathogens in minutes. Even <br />a five minute cycle will help eliminate viruses and bacteria. Even though UV-C <br />products work quickly, you should always take into account several factors <br />like intensity, distance, and time when you're finding the right UV dose <br />(https://insights.regencylighting.com/how-to-tell-if-uv-light-is-killing-viruses-like- <br />covid-19) . <br />Proven track record — Study after study for the last century has proven that <br />UV-C light can disinfect air and surfaces. Hospitals and medical buildings <br />have used UV light for decades. It's helped reduce transmission and gotten <br />rid of some of the hardest to kill bacteria. Experts in the lighting industry, like <br />the Illuminating Engineering Society, agree that UV-C is effective and safe <br />when used correctly. <br />Multiple applications -- There are multiple applications for UV-C and they all <br />work a little differently to disinfect air and surfaces. Products like upper room <br />UV-C fixtures (https:Hinsights.regency]ighting.com/how-much-does-upper- <br />room-germicidal-uv-cost) and UV lights for HVAC equipment <br />(https://insights.regencylighting.com/how-much-do-uv-lights-cost-for-hvac- <br />systems) target air disinfection and help reduce transmission of pathogens. <br />Products like UV-C fixtures (https://insights.regencylighting.com/uve-fixtures- <br />cost) and mobile UV units (https:Hinsights.regencylighting.com/mobile-uv- <br />units-cost) target surfaces in rooms or areas. There are most likely UV-C <br />products that will work for your business. <br />Cons of UV-C <br />Harmful to skin and eyes — The biggest drawback of UV-C products is you <br />can only use it in unoccupied rooms or areas. UV-C products can burn the <br />skin and eyes. There are certain products, like upper -room germicidal UV and <br />HVAC UV products, that can safely eliminate pathogens in occupied areas. <br />However, caution is still required for the maintenance of those products. <br />What is far-UVC? <br />Researchers started focusing on far-UVC in the last decade. Far-UVC uses a lower range dt*- <br />wavelengths (between 207 and 222 nm) for disinfection. Most far-UVC products contain 222 <br />nm light. <br />https://iDsights.regencyligliting.comluvc-vs-faruvc 11/11/2020 <br />