A deeper dive into the technology behind UV222™


UV light has been used for over a century to disinfect environments by removing viruses and bacteria. However, most UV light is also harmful to human tissue. This means that people, fx doctors and nurses, cannot be present in the room when the light is on. 

At the same time, traditional disinfection lamps known as excimer lamps are big bulky instruments only fit for a lab. However, this has all changed with UV222™.

The Far UV-C lamp consists of a tube filled with a gas called krypton chloride. This gas has the unique property of emitting UV-C-light at 222 nm when a discharge is applied to it. When the lamp is turned on, electricity creates a discharge that excites the gas and after a short period of time, UV-C light at 222 nm is emitted.

A Far UV-C lamp without a filter emits light in a narrow band around a 222 nm peak, but also releases secondary emissions around 235 nm and 250 nm. These extra wavelengths are known as side-bands or side-emissions. These wavelengths are harmful to humans, but the unique and patented safety filter technology blocks them before they are emitted into the surrounding environment.

The safety filter technology in the lamp from UV Medico is a thin filter that only lets light at around 222 nm through and blocks all other unwanted radiation. It works much in the same way as sunglasses with UV protection. It blocks the UV radiation from passing through and entering the environment, making the light from UV222™ safe.

UV-C light at 222 nm is highly effective against viruses such as the SARS-CoV-2 because the proteins making up the virus - and viruses in general - have an absorption spectrum with a peak around 220-230 nm. This means that viruses heavily absorb light at the 222 nm wavelength. When light enters the virus, the light is transformed into heat that deactivates the virus, including its capacity to infect and spread disease.

What’s even more interesting is that the UV light at 222 nm is not harmful to humans. The reason is that the top layer of the human skin is made of dead cells. These dead cells are mostly made of proteins. The same can be said for the top layer of the eye. These proteins absorb the light at 222 nm before it can penetrate the top layer and cause damage to the living tissue underneath.

All of this technology is gathered in a small, compact, and low-maintenance Far UV-C lamp with a lifetime of 5,000+ hours. When turned on in intervals, the lifetime of 5,000+ hours is extended and the lamp can be in use for years. That is why UV222™ is both the most effective, the most affordable, and the safest Far UV-C lamp on the market.

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