Trying new technologies is certainly important when it comes to our current pandemic situation. UVC air sterilisation is one of the latest of these new technologies and is proving to be among the best.
As we previously detailed, companies are using robots to go room to room to disinfect important areas.
Hospitals are especially in need of this type of technology. However, many other high traffic and much needed public spaces are also getting in on the action.
Transport for London has introduced a new way to make travel safer as the capital adapts to the restrictions imposed by the second-tier coronavirus restrictions.
More than 200 disinfectant units have been installed on 110 escalators in TfL’s transport network after the decision to use UV light to clean the handrails of the tube escalators.
They will be available to benefit all passengers. TFL also includes the use of high grade hospital detergents that kill viruses and bacteria on contact.
The equipment has already been installed and will be installed in some of the network’s busiest stations in the coming weeks, including London Bridge, Piccadilly, Euston, St Pancras, Canary Wharf, Waterloo and Other main stations.
How Does it Work?
UV lighting units are connected to the handrails of the escalators and work at night to reduce pollution and continuously remediate the surface.
The UV covid-19 Units have completed a similar clinical trial in the UK and it is the first time that UV light has disabled an earlier strain of coronavirus.
However, the TfL study found that the UV light disinfectant improves the cleanliness of escalators and railings by at least 50 per cent.
UV light units have been installed to continuously clean over 100 escalators in the metro network. TfL’s head of public health and safety, Dr Michael O’Brien, said: ‘We already have a rigorous cleaning system in place at all our stations and are determined to do everything we can to ensure our transport network is as clean as possible. We hope this will restore customer confidence and help in the fight against the spread of the coronavirus on the London Underground.
TfL said it regularly tests the network for coronavirus without finding evidence of the virus. New testing plans began last month with Imperial College London and work includes installing a new anti-virus system on the London Underground.
But How does UV Light Work, How is it Used?
UV light technology is becoming increasingly popular as companies introduce new methods to combat coronaviruses in their aircraft and on the ground. On July 29, JetBlue Airways unveiled a robotic arm that extends from the top of the seat to circle the cabin and treat the plane’s surfaces.
The entire cabin can be disinfected in about 10 minutes and is equipped with a HEPA filter system that contains UV light to combat additional germ infestation. While companies continue to use UV light to disinfect their planes and other flight equipment, the average American may be skeptical. Dr. Robert L. Schiller, professor of microbiology and immunology at the University of California, San Diego, is working with Columbia University to test the UV light.
There are four subcategories of UV light based on its wavelength, so how can light kill coronavirus? UV light is so bright that it becomes invisible, according to the International UV Light Association.
The longest UVA wavelength is between 400 and 315 nanometres, the shortest, between 200 and 300 nanometres, at the most common wavelength.
On the other side of the spectrum, vacuum UV has shorter wavelengths, ranging from 100 to 200 nanometers. Most black light falls into this category, with a small fraction falling into the purple spectrum, so people who use it see a purple color. Airlines, businesses, hotels and hospitals use UVC light to disinfect surfaces and kill viruses that may lack chemicals.
UVC light falls between 280 and 200 nanometres and can kill coronaviruses at wavelengths of only 1 nanometre, i.e. about 1,000 times shorter than the wavelength of black light.
Studies are Coming in….
Although studies have recently confirmed that UVC light is capable of killing the virus that causes COVID-19, several studies show that it can take up to 20 minutes.
UVC can also kill other viruses including flu and other seasonal coronaviruses. Dr. Michael G. Smith of the Department of Microbiology and Immunology at the University of California, San Diego, says germicidal substances have been used for decades to disinfect surfaces and kill viruses. But how can light kill a virus and why does it work so well in this case?
One theory, according to O’Malley, is that UVC light damages the virus’s RNAs, preventing it from replicating and infecting. It can also damage the proteins that envelop the viruses and impair their ability to attach to host cells.
A typical germicidal UVC light kills viruses at a wavelength of 254 nanometres, but each virus is different and each virus infects in a different manner.
Some are very resistant and require higher UV doses, others are more susceptible to lower UV doses. It also requires the measurement of different UV doses according to light intensity and exposure time. If the measurements are correct, UVC light can kill 99.9% of viruses and bacteria, but it can also cause serious side effects.
We now know that TFL, airlines, and other businesses are using UV light disinfection to help reduce the infection rates and kill the virus.
Our UV air sanitising units are capable of killing the virus in the air and on surfaces and are scientifically tested to do so.
Thanks for reading our article and get back to us often to find out about the latest virus and uv light news!