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UVC light is remarkable stuff. But some wavelengths are better than others where killing the Covid-19 virus is concerned.
It's really good to know that our UVC lights emit UV at the best possible wavelengths, those that give the coronavirus the best run for its money. If you want to keep your premises safe by damaging the virus so badly it can't reproduce, here's some insight into the best technical solution. Thanks to LEDs magazine for the science.
Why insist on Covid UVC disinfection at 275nm to 280nm wavelength?
Our UVC lights' wave length is 275-nm to 280-nm. It's great news because the most effective virus deactivation UVC wavelength of all is actually 270-nm, not 265-nm as previously thought. This places our solid state LED UVC machines a lot nearer the deadliest wavelength of all than the usual UVC fluorescent tube machines you see advertised.
Research into UV LED ideal wavelengths – confirmed
We've been watching developments in virus-killing UV light research closely, and this is some of the most interesting news we've had for a while.
A collaboration between Crystal IS, the UV LED manufacturer, and Boston University's National Emerging Infectious Diseases Laboratories, in the USA, reveals 'almost instantaneous deactivation at wavelengths of 270 nm or shorter, and much lower efficacy for LEDs operating at 280 nm.'
It matters because most people thought the ideal germicidal UV wavelength was a low 254-nm, based on the fact that old-fashioned mercury discharge lamps operate at that peak wavelength. But recent research shows that energy in the 270-nm range has the greatest germicidal efficacy.
The UV LED manufacturer Crystal IS and Boston University tested efficacy with the SARS-CoV-2 virus in mind, examining the 260–270-nm range and also testing a wavelength of 280-nm. Overall, the results suggest 270-nm doses of UV-C deactivate the virus that causes COVID-9 'in a matter of a few seconds at worst'.
We're seeing some LED manufacturers promoting 280-nm LEDs for disinfecting against SARS-CoV-2. They're easy to make, but that isn't a good enough reason for promoting them when a lower wavelength performs better. Yes, 280-nm UVC light will deactivate the virus. But it isn't as good as the 270-nm end of the scale, the scale that's nearer the wavelengths our machines operate to.
What does this mean to businesses, schools, healthcare settings and more?
You want to make a good, sensible decision based on the latest science. Our machines currently provide UVC at a highly effective wavelength, one that's much closer to ideal than our competitors' machines.
Can we help your business survive and keep your customers safe?
If you'd like to read the full story, here it is. Alternatively, give us a call or send us an email and we'll talk you through the details of our brilliant LED UVC disinfection systems.