UVC LED - The Future of Air And Surface Disinfection

UVC LED - The Future of Air And Surface Disinfection Chemical Free, Cost Effective & Sustainable

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Table of Contents 03 Introduction & History of UVC 04 How UVC Works 05 Types of UVC LED 06 Types of UVC Continued 07 Benefits 08 Comparing Disinfection Techniques 09 Measurement, Testing & Lab Reports 10 Calculating Disinfection 11 Safety - First and Always 12 Duty of Care 13 References

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Introduction "We must be ready to respond to the next pandemic swiftly and equitably - and that means preparing now" Melinda Gates 2021 G7 summit [1] It is our goal not to react but to help prevent the next pandemic from ever taking hold, without sacrificing the environment or the bottom line.

As the world continues to navigate the stormy microbial climate, the demand for fast effective, proven and chemical free solutions has never been greater.

UV-C germicidal light has been keeping us safe and healthy for decades and could hold the key to our long term health.

Harmful bacteria, viruses are a part of our everyday existence and can cause a wide range of infections including the Coronavirus. Reducing the viral load in the air we breathe and the surfaces we touch will go a long way to keeping us safe in the future.

A Short History of UV-C Technology In 1878, Arthur Downes and Thomas P. Blunt published a paper describing the sterilisation of bacteria exposed to shortwavelength light.

Commercial UV-C germicidal lamps were developed during the 1930s. They were used primarily in hospitals.

The 1903 Nobel Prize for Medicine was awarded to Niels Finsen for his use of UV as a germicidal agent.

By 2010 the first UVC LED chips were being introduced to the market, paving the way for more sustainable cost effective & chemical free air, surface and water disinfection methods.

1910 first use of UV light for disinfection of drinking water in France. By 2001, over 6,000 UV water treatment plants were operating in Europe https://www.uvcsanitisingsolutions.com/

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How UVC Works UV germicidal light is one of the most researched, tested and effective non chemical, no contact methods for eliminating and inactivating harmful micro-organisms known to man.

What Is UV Lighting?

Like infrared light, ultraviolet (UV) is ever present but undetectable to the human eye. As you can see from the chart below invisible UV energy can be broken into distinct categories.

UVA (long wave) 315nm to 400nm : Accounts for 95% of the Suns energy on earth UVB (medium wave) 280nm to 315nm : Accounts for 5% of Suns energy on earth UVC (short wave) 100nm to 280nm : Blocked by earth's atmosphere by the Ozone Layer

How does UV-C work?

Unlike chemical methods for air & surface disinfection UV-C technology utilises the principle of Time*Intensity*Distance at wavelength within the UVC spectrum to eliminate and inactivate all harmful microorganisms such as viruses, germs bacteria, moulds and spores.

“UVC-LED sanitization unit demonstrated complete virus inactivation under all the tested conditions. These results confirmed that the UVC-LED disinfection system can provide rapid, reliable, safe, and complete inactivation of human coronavirus from surfaces...within 8 seconds at 5 feet distance"- Subhash Verma, Ph.D., Department of Microbiology and Immunology at the University of Nevada, Reno[2]

To date all bacteria and viruses tested after exposure to UVC disinfection have been eliminated and inactivated, this includes many different forms of coronaviruses and Covid 19.

Even bacteria that have found a way to become resistant to drugs are no match for UVC Disinfection. This makes it one of the greatest preventative tools in the world.

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275 nm - UVC LEDs ,closest to germicidal peak

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Types of UVC LED Disinfection Direct Fixed Unit By there very nature viruses are easily transmitted from people to people via air and surface cross contamination. The WHO has stated that the COVID 19 virus is spread by contact with large respiratory droplets ,directly or indirectly by touching contaminated surfaces and then touching the eyes, nose or mouth.

In fact there are new variants and strains arriving all the time a July 12 2021 article in the Wall Street Journal headline reads "New Variants Seen as Too Contagious for Hotel Quarantines." [3] By installing direct fixed static UVC LED units within a space you can automatically disinfect the air and surfaces any time the space is unoccupied, significantly reducing the spread of illnesses.

Upper Air Germicidal Units Ideal for continuous disinfection when people are present, for example a shared office space, schools, medical settings sports dressing room or even a retail outlets.

Units are installed above peoples heads to stop the cross contamination of viruses and germs by reducing the viral load across the air.

[4]

Upper air germicidal units (UVGI) help to create a space where clean air is the standard, not the exception.

By providing the best in class to employees, patients and students we can expect to see higher levels of productivity while greatly reducing the number of sick days throughout the year. https://www.uvcsanitisingsolutions.com/

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UVC LED Continued Mobile Units Mobile UVC LED germicidal lights are ideal for use as a compliment to regular cleaning service. Quick turnaround with no downtime is essential to most environments.

Our robust solid state UVC LED units contain no harmful mercury vapour [5] which makes them ideal for quick chemical free disinfection by cleaning staff. Each aspect of the mobile disinfection unit has been designed from a safety and ease of operation point of view.

Mobile units can be easily transported from building to building and from room to room for continuous disinfection or emergency response.

Mobile Vehicle Units "Studies which explored the role of transport on other epidemics, such as influenza A/H1N1, SARS, and Ebola, explained that the road transport and socioeconomic status, railways, highways, and civil aviation subway ridership and air travel rate between cities affected the spread of the disease significantly." [6] MDPI It is necessary to protect our public transport system, effectively, efficiently and sustainably without introducing more harmful chemicals into the ecosystem.

Our UVC LED vehicle germicidal unit was purpose built to be effective, quickly disinfecting without causing damage to interiors or electronics over sustained periods of time.

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Benefits of using UVC LED Germicidal Lamps Clean Air and Surfaces should be a standard in any public spaces, offices and transport systems and we must do our part to ensure that is managed in a sustainable, long lasting cost effective manner.

It is our responsibility to use the cleanest most reliable and long lasting air and surface germicidal lamps the world has known.

Top Ten Reasons To Consider UVC LED as Part of Your Long Term Sustainable Disinfection Solution

Longevity Lifespan of LED UVC up to 10,000 hours.

Chemical Free UVC is a physical disinfectant, sustainable, environmentally friendly and cost effective.

Cost Effective Practically unlimited disinfection, no refills, replacements or additional labour.

Works Every-time Not dependant on human processes, whatever the UVC touches it eliminates, based on Time*Intensity*Distance Instant Strike No heat up or set up, choice of fully automated or push button activation.

Proven One of the most researched, field tested and implemented air and surface disinfectants in the world.

Robust Solid State LED technology allow for different designs without harmful mercury vapour, designed for real world use Safe Safety first and foremost, each luminaire is has several safety features built in as standard.

Versatile High quality UVC LED solutions that are perfect for a wide range of applications.

Sustainable Cost effective, Long Lasting, Chemical Free, Mercury Free, Low Energy, Modular Design. https://www.uvcsanitisingsolutions.com/

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Comparing UVC LEDs Disinfection Methods

Method

Action

25 Sq Metre Room Disinfection Time

Protective Clothing

Effects from continued use on electronics and furniture

Replacements, Residue Re lls

Downtime Between Disinfection

Chemical Fogging,Misting and Spraying

Process of using chemicals to "fog" or "mist" and area in an effort to disinfect

Up to 45 minutes

PPE Required

Yes

Yes

Yes

O3

Adding an extra atom of ozone to make space inhospitable to microorganisms

Up to one Hour

Not Necessary

Yes

No

Yes

UVC Florcesent/Xenon Cathode

UVC created by uorescent tubes and Cathode ray tubes

10 minutes

Not Necessary

No

Bulbs need replacement

Yes - If ozone generated

UVC LED

LED Technology to create UVC germicidal waves

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10 minutes

Not Necessary

No

No

No

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Measurement, Testing & Lab Reports Dosimeters [7]

Dosimeters are the industry standard for measuring the impact of UVC energy.

Simply place the cards throughout the area to be disinfected to see the levels of UVC energy.

Disinfection levels are measured in mj/cmsq

The technology consists of a photo-chromatic ink that changes colour when it is stimulated

by UVC light.

Changes to the colour at various energy levels, which correlates with a log reduction of microbiology samples Real world tests performed in working environments to show before and after effects of UVC LEDS

SGS is the world's leading inspection, verification, testing and certification company. SGS are recognised as the global benchmark for quality and integrity.

Dr Gary Rowley explores the Antimicrobial Potential of UVC LEDs

All papers and reports are available to view and download https://www.uvcsanitisingsolutions.com/technology https://www.uvcsanitisingsolutions.com/

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Calculating Disinfection Bacterial Simulation Calculator

[11]

Different Micro-organisms are eliminated at different levels of UVC exposure.

For example Boston University's National Emerging Infectious Diseases Laboratories "found that a dose of 5 mJ/cm2 resulted in “a reduction of the SARS-CoV-2 virus of 99% in 6 seconds.”

[10]

UVC works on the principle of Time*Intensity*Distance - as can be seen by our calculator on elimination levels of 31 common microorganisms.

Once the variables are known our calculator produces a chart (below) that illustrates % disinfection from the direction of the UVC luminaire.

This enables us to determine the correct use in whatever space beforehand.

In this example we simulate the disinfection rate within a 25 sq metre room using our 600 watt UVC LED mobile unit.

The disinfection time is set to 10 minutes as per Covid 19.

Note: Different microorganisms have different elimination times.

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Safety First and Always All UV disinfection solutions emit light in varying amounts, as such safety features need to be in place to ensure healthy operating standards.

Each Cool-Tech UVC luminaire is fitted with an array of safety features as standard and installed by qualified electricians.

Apart from the standard features below we provide user manuals, training, support, bacterial simulation calculations as per each space, luminaire and pathogen.

Microwave Motion Sensor

Sound Alarm

Every UVC light is fitted with highly sensitive motion detection sensors.

They sensor detects mass density and shut off the UVC before any person can come into contact with the light. If no mass density is detected after 30 seconds the disinfection process will restart.

Once the UVC lamp is activated a sound alarm is set in motion. The length of the time that the alarm will sound for can be set to different times to allow for the space to clear completely before the disinfection process begins.

Time Delays

Visible Light

With UVC LED it is possible to instant strike disinfection. There is no warm up time for the lights to work. Internal time clocks are set to set the light in motion once it has been decided the right disinfection time needed. Everything is set to be automatic or by a simple push of a button.

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As UVC is part of the invisible spectrum it is important that humans have a sensory perception that the luminaire is in operation. Each light glows with a purple hue so it is easy to comprehend that the germicidal action is taking place.

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Duty of Care Importance of Disinfection Methods

€476 billion Disinfect Shelving & Counters Without Chemicals

Disinfect Carriages, Seats Handrails & Armrests

In the European Union alone, work-related ill-health and injury is costing 3.3 percent of its GDP. That’s €476 billion every year, which could be saved with the right occupational safety and health strategies, policies and practices, said Dr. Christa Sedlatschek, the director of EU-OSHA.[12]

“Cleaners tend to go in with hugely toxic chemicals.

We’re creating another problem for a whole group of people, and I’m not sure we’re actually controlling infections.” Dr. Claudia Miller, an immunologist, allergist and co-author of Chemical Exposures: Low Levels and High Stakes [13]

Disinfect High Traffic Areas With The Flick of a Switch

Reduce Sick Days & Increase Wellbeing

Eliminate Pathogens & Increase Shelf life

Disinfect Guest Rooms, Gyms, Ballrooms, Meeting Rooms

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Resources G7 discuss 100 Days Mission to improve readiness for future ...https://www.g7uk.org › g7-discuss-100-days-mission-to...[1] https://www.unr.edu/nevada-today/news/2021/uvc-test-on-coronavirus[2] https://www.wsj.com/articles/new-variants-seen-as-too-contagious-for-hotelquarantines-11626095999[3] https://www.bostonglobe.com/2020/07/26/metro/could-century-old-technology-zapcoronavirus-schools-offices/[4] https://www.researchgate.net/publication/327595031_Journal_of_Environment_and _Health_Science_Mercury_and_its_Associated_Impacts_on_Environment_and_Human _Health_A_Review_Citation_Saturday_A_Mercury_and_its_Associated_Impacts_on_En vironment_and_Human_He/link/5b99014992851c4ba814663a/download [5] Role of Transport during Outbreak of Infectious Diseases - MDPI [6] https://www.americanultraviolet.com/ [7] https://www.uvcsanitisingsolutions.com/sut-report[8] https://www.uvcsanitisingsolutions.com/sgs-report [9] https://www.uvcsanitisingsolutions.com/uea-report [10] https://www.ledsmagazine.com/lighting-health-wellbeing/article/14177977/bostonuniversity-validates-signify-uvc-for-coronavirus-deactivation [11] https://www.ehstoday.com/safety/article/21919234/workrelated-illnesses-andinjuries-cost-eu-476-billion-a-year [12] https://www.insurancejournal.com/news/national/2020/06/16/572413.htm#[13] www.uvcsanitisingsolutions.com/uv-calculator [11] CaseStudies:https://www.uvcsanitisingsolutions.com/services#Schools andUniversities Videos https://www.youtube.com/channel/UClCILShUcgwC51gdDGjZR4Q

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UVC LEDs For a Better World

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