UV 60W UV germicidal Light LED UVC Light Bulb E27 Lamp Remote Virus Mite Bacteria and Coronavirus
2020 Newest 60W UV germicidal light LED germicidal UVC Light Bulb E27 germicidal lamp
Remote Control timing Killing Virus Mite Bacteria For Home use and small home office
Cautions and Warning: never use a UV Device while people and animals are present see information below:
Information re UV germicidal light , UVC Light for Coronavirus:
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Can UV Light Kill or Prevent Coronavirus? Yes it can
Can you kill coronavirus with UV light? BBC
Scientists have discovered that they could harness UVC to kill microorganisms. Since the finding in 1878, artificially produced UVC has become a staple method of sterilisation – one used in hospitals, airplanes, offices, and factories every day. Crucially, it’s also fundamental to the process of sanitising drinking water; some parasites are resistant to chemical disinfectants such as chlorine, so it provides a failsafe.
Though there hasn’t been any research looking at how UVC affects Covid-19 specifically, studies have shown that it can be used against other coronaviruses, such as Sars. The radiation warps the structure of their genetic material and prevents the viral particles from making more copies of themselves.
However, it’s not quite as good as we might have hoped. In a recent study – which looked at whether UVC could be used to disinfect PPE – the authors found that, while it is possible to kill the virus this way, in one experiment it needed the highest exposure out of hundreds of viruses that have been looked at so far. The amount of ultraviolet required varied widely, depending on factors such as the shape and type of material the virus was on.
Nevertheless, a concentrated form of UVC is now on the front line in the fight against Covid-19. In China, whole buses are being lit up by the ghostly blue light each night, while squat, UVC-emitting robots have been cleaning floors in hospitals. Banks have even been using the light to disinfect their money.
A bus is disinfected using UVC in Shanghai, China (Credit: Getty Images)
At the same time, UV equipment suppliers have reported record sales, with many urgently stepping up production to fill their orders. Arnold says UV Light Technology has run out of all of its equipment already.
But there’s a major caveat.
UVC is really nasty stuff – you shouldn’t be exposed to it – Dan Arnold
Caution “UVC is really nasty stuff – you shouldn’t be exposed to it,” says Arnold. “It can take hours to get sunburn from UVB, but with UVC it takes seconds. If your eyes are exposed… you know that gritty feeling you get if you look at the sun? It’s like that times 10, just after a few seconds.”
To use UVC safely, you need specialist equipment and training. The World Health Organization (WHO) has issued a stern warning against people using UV light to sterilise their hands or any other part of their skin.
During the White House briefing on Thursday, the US president suggested that UV light could be brought inside the body to kill the coronavirus. It’s not clear which type he meant, but given what we know about the damage UVA, UVB and UVC can do to genetic material and living tissues, this would be a bad idea – let alone impractical, since Covid-19 mostly infects the lungs.
Recently, scientists have discovered a promising new type of UVC which is less dangerous to handle, and still lethal to viruses and bacteria. Far-UVC has a shorter wavelength than regular UVC, and so far, experiments with human skin cells in the lab have shown that it doesn’t damage their DNA (more research is needed to be sure).
On the other hand, bacteria and viruses don’t come off as well, because they are small enough for the light to reach. One study found that it could prevent mouse wounds from becoming infected with the superbug MRSA, while another found that it could kill flu viruses suspended in the air.
However, the vast majority of the UVC lamps on the market don’t use far-UVC yet – and again, it hasn’t been tested in actual humans, just on our cells in petri dishes and other animals. So this type of radiation probably won’t help you during the current pandemic either.
Would UVA or UVB work instead? And if so, does this mean you can disinfect things by leaving them out in the sun?
The short answer: possibly – but you wouldn’t want to rely on it.
In the developing world, sunlight is already a popular means of sterilising water – it’s even recommended by the World Health Organisation (WHO). The technique involves pouring the water into a clear glass or plastic bottle, and leaving it out in the sun for six hours. It’s thought to work because the UVA in sunlight reacts with dissolved oxygen to produce unstable molecules such as hydrogen peroxide, the active ingredient in many household disinfectants, which can damage pathogens.
Without water, sunlight will still help to disinfect surfaces – but it may take longer than you’d think.
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