What are the positive and negative issues with different types of disinfection?

The Covid-19 pandemic is just the beginning!

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"I fear these microbes will have the last word!" Louis Pasteur

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French scientist Louis Pasteur was the first to connect the unseen world of

microorganisms with infection and disease. His prophetic statement predicted

an apocalyptic future in which human beings might be eliminated by an 

onslaught of deadly pathogens. Bacterial, viral, and fungal microorganisms

are referred to as pathogens. These pathogens have evolved much faster than

humans. We are now in a desperate struggle which we must win. Our survival

is in the balance. 

They are around us, on us and in us.

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The battleground for this epic war is not just in our laboratories and hospitals. This war is taking place in our, schools, restaurants, shopping centers, and homes. Human beings and other living things are literally immersed in an ocean of these microscopic entities. The professional effort to control and limit the harmful effects of microorganisms on other living things is called Infection Control.

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Ultraviolet Light Technologies is a professional Infection Control company dedicated to the eradication all pathogens. Our Guardian Angel line of UV light sanitizers are designed and manufactured for use by the public. UV light sanitizers have been in use since the early 1900's. UVC ultraviolet. 

Everyone has heard that UV light exposure is bad. It causes oxidation, which can result in many problems in humans and other creatures. Technically speaking, it is likely always bad for the creatures that are exposed to it, unless they have developed some means of protecting themselves from their negative effects.

This is the precise reason that UV light exposure is good for disinfecting both surfaces and the air. The light is so bad for germs that it can kill them within a few minutes! That, however, is very good for those who want to avoid catching diseases.

Technically, any UV light wavelength is bad for germs, but not all of them are powerful enough to be considered good for disinfection. The wavelength that is good for this is UV-C, which is not the kind that gets talked about by sunscreen companies. In nature, most exposure is UV-A or UV-B, so these are the wavelengths that sunscreens work to block. However, these wavelengths take much longer to kill germs.

Because of this, a UV-based disinfection unit will use UV-C rays to do its job. This lets you shine the disinfection light for about 15 minutes and kill the germs that are on the surfaces exposed to that light. When germs are in the air, UV-C works even faster. An air purifier that includes UV light exposure will kill germs in the time it takes for the air to be blown past the light.

As you might expect, such a powerful UV light wavelength is harmful to humans. Therefore, UV disinfection devices have safety systems that keep humans from being exposed. They may shut off when motion is detected, have a delayed start so you can leave the area, or in the case of purifiers, have enclosed light sources.