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Can UVC Light Inactivate The Coronavirus?


Customers may be seeking to purchase ultra-violet (UVC) bulbs to sanitize surfaces in the house or other comparable locations given the current epidemic of Coronavirus Sickness 2019 (COVID-19) disease brought on by the new coronavirus SARS-CoV-2. 

What Is UV Light?

UV (ultraviolet) light is a form of electromagnetic radiation. It has a shorter wavelength than visible light, so it is invisible to the naked eye, but it can be detected by its effect on various substances. UV radiation can change chemical bonds in molecules, causing chemical reactions, and can also cause many substances to fluoresce or emit light. UV radiation degrades the chain structure of polymers, resulting in loss of strength and possibly discoloration and cracking. It is also absorbed by many pigments and dyes, causing them to change color. UV light  occur naturally in sunlight and can also be emitted by artificial light sources.

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Types of UV Light?

  • UVA, or near UV (315–400 nm), UVA light has the lowest energy. When you're in the sun, you're primarily exposed to UVA light. Exposure to UVA light has been linked to skin aging and damage.
  • UVB, or middle UV (280–315 nm), UVB light is in the middle of the ultraviolet spectrum. A small fraction of sunlight contains UVB light. It is the main type of UV rays that cause sunburns and most skin cancers.
  • UVC, or far UV (180–280 nm), UVC light has the most energy. Most of the UVC light from the sun is absorbed by the Earth's ozone, so you're not normally exposed to it every day. However, there are a variety of artificial UVC sources.

The lamp's wavelengths may impact how well it can inactivate viruses and the safety and health concerns that may be involved. Testing the lamp can reveal whether and how much of any additional wavelengths it emits.Typically, a relatively small wavelength range of radiation is emitted by LEDs. Since LEDs don't contain mercury, they have an advantage over low-pressure mercury lamps. 

At present, experiments prove that UVC light is the most effective type of ultraviolet light to kill bacteria. It can be used to disinfect surfaces, air and liquids. UVC light kills germs like viruses and bacteria by destroying molecules like nucleic acids and proteins. This makes it impossible for the bacteria to carry out the processes it needs to survive.

About UVC Light and the Novel Coronavirus

The novel coronavirus was tested in liquid cultures utilizing UVC light in a recent study published in the American Magazine of Infection Control.

UVC Light for Surface Sanitation

Another research reported in the AJIC examined using a particular UVC light to eradicate SARS-CoV-2 on lab surfaces. According to the study, the UVC radiation killed 99.7% of the live coronavirus in under 30 seconds.

Using UVC Light To Purify the Air 

A study that was investigated utilizing far-UVC light to eliminate two varieties of human coronaviruses inside this UVC air disinfection in the scientific journal Scientific Reports.


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UVC Light for disinfecting liquids

 A recent study in the American Journal of Infection Control (AJIC) investigated the use of UVC light to kill large numbers of novel coronaviruses in liquid cultures. The study found that 9 minutes of UVC light irradiation can completely inactivate the virus.

How to Use UVC Lights to Kill Coronavirus

Water, air, and certain surfaces and spaces are difficult to clean. UVC lights can be used to disinfect these environments. For example, UVC lights and robots are used to disinfect water, surfaces in empty hospital rooms, and large vehicles such as buses. UVC lights  can be used in open spaces indoors to inactivate airborne viruses and other microorganisms. Lighting is installed at the top of the room at a height of at least 8 feet (2.4 meters). It is angled so that it shines horizontally or towards the ceiling rather than towards the floor. Fans and lights ensure that the air moves from the bottom of the room to the top and vice versa. By doing this, the entire air in the room is exposed to UVC lights , which inactivates airborne bacteria. UVC lights can also be installed in air ducts to inactivate airborne viruses and other bacteria that move from room to room.

It is important that UVC lights  used in rooms with people do not hit the room. His high intensity UVC light can damage eyes and skin in just seconds.

What Drawbacks Does UVC Lights Have? 

One of its drawbacks is that UVC light requires direct touch to be effective.

· It is yet unknown what UVC exposure parameters, such as wavelength and dosage, are most effective for killing SARS-CoV-2.

· Your eyes or skin may become damaged if exposed to particular UVC light kinds.

· The UVC light lamps that are offered for use at home are frequently of lesser intensity. As a result, the time it takes to destroy bacteria may be longer.

· UVC light sources might create ozone or mercury, which could harm people.

What Are The Many Lamp Kinds That May Emit UVC Radiation?

Here is a detail so know what will exactly work for you.

Low-Pressure Mercury Lamp:

 In the past, UVC radiation was most frequently produced by low-pressure mercury lamps, which emit mostly at 254 nm (>90%). This kind of bulb can also generate other wavelengths. Other lamps are available that generate not only visible and infrared light but also a wide variety of UV wavelengths.

Excimer Bulb or Far-UVC Lamp:

A particular type of lamp with a peak emissions of about 222 nm is called an "excimer lamp."

Pulse Xenon Lamps:

These lights, which produce brief bursts of UV, visible, and infrared light that have been controlled to release UVC radiation primarily, are occasionally used in hospitals to clean surfaces in operating theatres and other areas. These are typically used when there are no people present in the area.

Light-Emitting Diodes:

It is also getting easier to get LEDs that emit UV radiation. Typically, a relatively small wavelength range of radiation is emitted by LEDs. Since LEDs don't contain mercury, they have an advantage over low-pressure mercury lamps. LEDs may be more directed and have a smaller surface area.

Where to Buy UV Light From?

Now, you have learned that UVC lights have a certain effect on the new crown virus, and use UVC lights for daily disinfection.  Zhuhai Tianhui Electronic Co., Ltd is a perfect solution to buy your UVC lights. 2002 saw the establishment of Zhuhai Tianhui Electronic Co., Ltd. This is a production-focused, high-tech UV Led manufacturer that specializes in UVC air disinfection and UV lights provision for a range of UV LED Solution applications. It integrates research and development, manufacturing, sales, and UV LED Solution provision.

The main representative in Greater China is Seoul Semiconductor SVC, with a partnership spanning more than ten years. Twenty years of extensive experience inside the UV LED market, knowledge of the use of UV lights in various sectors, and qualified to provide clients with product development and research. It can quickly reply to client requests and assist customers in analyzing and solving issues the first time.

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Final Words

Studies have shown that UVC lights can successfully kill the virus SARS-CoV-2 on surfaces up to 99.7%. UVC air disinfection has been incorporated into the standard cleaning procedures by many hospitals and medical institutions. Hospital wards, operating theaters, operating rooms and medical equipment benefit from UVC air disinfection to keep them clean and remove pathogens, including certain antibiotic-resistant superbugs. Daily cleaning can also use UVC lamps for disinfection.

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