UV Medico | Filtered 222 nm Far-UVC for Cleanrooms & Healthcare

The science

Why it can run while people are present

Filtered 222 nm

Mercury-free KrCl lamp with an integral optical filter that suppresses emissions above ~230 nm

Occupied spaces

Absorbed in the non-living outer layer of skin and eyes – within ACGIH / ICNIRP limits

Continuous

Works between cleaning cycles – no chemicals, no residue, no added staff workload

13,000+

UV222 fixtures installed worldwide, including operating theatres and cleanrooms

Every installation includes a site-specific exposure assessment, confirmed by measurement at commissioning.

Explore the science → Safety and compliance →

Frequently Asked Questions

What is far-UVC?

Far-UVC is the 200–230 nm part of the germicidal UV-C band. At 222 nm it inactivates bacteria, viruses and fungi by damaging their nucleic acids and proteins. UV222 systems use filtered 222 nm far-UVC to continuously reduce airborne and surface bioburden while people are present.

We already clean and disinfect – why add far-UVC?

Cleaning and disinfection remain essential. The gap is between them: microorganisms are reintroduced and build up as patients, staff and visitors use the space. UV222 adds a continuous layer that helps keep microbial load lower between cleaning cycles, without disrupting clinical activities or adding staff workload.

Can it be used while people are present?

Yes, within applicable exposure limits. At 222 nm the light is absorbed in the non-living outer layer of the skin and in the tear film and outermost layer of the cornea, so very little reaches the living cells beneath. The integral optical filter and built-in safety control keep exposure within ACGIH / ICNIRP limits, and every installation has a site-specific exposure assessment confirmed by measurement at commissioning.

Why 222 nm and not 254 nm UV-C?

254 nm UV-C penetrates deeper into skin and eyes, so it is limited to unoccupied spaces. Filtered 222 nm far-UVC can be used in occupied areas.

How does far-UVC fit into an EU GMP Annex 1 Contamination Control Strategy?

EU GMP Annex 1 requires a Contamination Control Strategy (CCS) that covers all contamination sources, including personnel, materials and equipment. A far-UVC step can be added at specific points, such as personnel entry or material transfer, as a documented risk-reduction measure. It complements gowning, cleaning and environmental monitoring rather than replacing them.

Does it produce ozone?

Very little. 222 nm light produces small amounts of ozone in room air. At the fixture density UV Medico specifies, with normal ventilation, measured levels stay well below applicable guideline limits. In small or poorly ventilated spaces, such as vehicles, ozone is included in the installation-specific assessment.

Can microorganisms become resistant to it?

No acquired resistance to 222 nm has been demonstrated. Because 222 nm damages nucleic acids and proteins directly rather than a single molecular target, antibiotic-style resistance is not expected. Susceptibility varies between organisms: bacterial spores and some fungi need higher doses.

How long do the lamps last?

UV222 lamps are rated for 17,500 hours – roughly two years of continuous 24/7 operation, and longer on a daytime duty cycle. There are no air filters or chemicals to replace, and UV Medico provides a two-year warranty on the system.

Ask our application team

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Jordi Amagat Molas: Sep 28, 2026

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Laura de Querol: Sep 3, 2026

Expanding access to Far-UVC solutions designed for occupied healthcare spaces UV Medico is pleased to announce a new...

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Laura de Querol: Jun 30, 2026

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ABOUT UV MEDICO

Danish engineering for air and surface microbial reduction

UV Medico A/S develops and manufactures filtered 222 nm far-UVC systems for continuous reduction of airborne and surface bioburden while people are present. Founded in 2019, we combine photonics, microbiology and engineering – from everyday indoor spaces to cleanrooms, hospitals and food production.

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