Effectiveness of UV-C Light for Microbes

Ultraviolet sanitization is a fast progressing & important alternative to anticipate the surface transmitted infections. UV sanitization isn’t a modern innovation, having been discovered in 1879. Found to be a valuable innovation for cleaning infectious spaces, more researches were done to decide the precise advantageous nature of UV for disinfection purposes. Since the 20th century, UV sanitization has been utilized to disinfect things like water and work surfaces. UV light is a shorter wavelength than visible light and is able to enter and devastate the bodies of viruses and microscopic organisms.

Ultraviolet light is the primary germicide of the environment by a natural source, the sun. And this ultraviolet light is subdivided into different categories according to their wavelength spectrum, into UV-A, UV-B, and UV-C respectively. Out of which UV-C has the most effective germicidal effect on all microorganisms but is mainly absorbed by the ozone layer of our environment as is also harmful for other living organisms. Thus, one has to use it by artificial production only and the most effective safest wavelength of UV-C light is 253.7 nm.

Effectiveness of UV-C light

Effectiveness of UV-C light

UV sterilization is also known as UV sanitization or ultraviolet Germicidal Irradiation (UVGI).

Effectiveness of UV-C light

UV-C light at a short wavelength of 253.7 nm is highly effective in eradicating the germs or microorganisms where it is being exposed. There is a 6 digit log reduction that is being proven by different studies at different places and this six-digit log can also be represented as 99.9999% of efficacy to eradicate bacteria and viruses.

UV-C light mainly targets the genetic material of a cell, DNA/RNA, and destroys it by alteration in their arrangement, thus makes it incapable of reproduction as well as for further infection. This highly capable UV-C light of 253.7 nm wavelength can be obtained from a low-pressure mercury lamp and thus becomes cost-effective too.

Pros & Cons of UV-C light:

Pros & Cons of UV-C light:

Of course every disinfection process has its Pros. and Cons. A few are listed in the table below:

Pros for UV Sterilization Cons for UV Sterilization
It is helpful to utilize and no chemicals are required. Hence you won’t take off any chemical buildup behind. UV sterilization is usually done with safety measures. Keep in mind to maintain a strategic distance from direct exposure to UVC, particularly skin and eyes.
It is able to slaughter all sorts of microorganisms, counting drug-resistant  Microscopic organisms. It contains a major restrain! UV only works in its light path and can be blocked by objects. Ensure things need to be sanitized is specifically in line with the UV light.


Thus it has been obvious for a long time that UV-C lights are greatly effective in maintaining the sanitization of objects for more than 100 years, the light is also eradicating the disease-causing microorganisms up to a great extent. The method is cost-effective and greatly advantageous as there are many products like UV-C handheld, UV-C sanitizer box, etc. available in the market to provide the UV-C protection to an individual.

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