UV Disinfection
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UV disinfection describes the treatment of air, surfaces, or liquids using short-wave UVC radiation. Thanks to its cell-damaging effect, it represents an effective and chemical-free alternative to conventional disinfection methods.
UV-C technology inactivates microorganisms such as bacteria, viruses, yeasts, and fungi and is therefore relevant in a wide range of applications where reliable germ reduction is required – 254nm.
For example, companies in the food industry use UV systems to minimize contamination and extend the shelf life of products. Beyond that, UV treatment plays a key role in many sectors, as it can significantly reduce or even completely replace the need for chemicals. This applies not only to water treatment but also to air disinfection and surface hygiene.
UV components and systems thus enable efficient germ reduction and can even create aseptic environments.
Without the use of chemicals
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UV-C TECHNOLOGY
UV-C Rays – Natural Protection
UV-C rays are part of natural sunlight and effectively stop microorganisms from spreading.
Because UV-C disinfection works through a purely physical process – without chemicals, toxic residues, or the risk of resistance – it offers you a safe and sustainable solution.
You can ensure reliable hygiene in food production and retail, water supply, HVAC systems, as well as in pharmaceutical, laboratory, and more.
Perfect Hygiene for Your Operations
UV-C disinfection ensures perfect hygiene in production and operations, supporting sustainable quality assurance.
Hoenle offers a broad portfolio for:
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Air disinfection
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Surface disinfection
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Water purification
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Odor elimination
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Room air drying
Your benefit: You can maintain the highest hygiene standards across your entire operation – protecting both your products and your reputation.
UV-C radiation – the shortest wavelengths with maximum effect
UV-C light covers the shortest ultraviolet range (100–280 nm). Thanks to the intact ozone layer, this high-energy radiation is naturally filtered and does not reach the Earth’s surface.
Unlike UV-B, which penetrates deeply into the skin, no proven causal link between UV-C exposure and skin cancer has been found. Still, UV-C must always be applied under controlled conditions for safety.
How UV-C disinfection works
High-energy UV-C radiation triggers a photochemical reaction. At a wavelength of 253.7 nm, the cell nucleic acids absorb the radiation, leading to the inactivation or destruction of germs, viruses, yeasts, and fungal spores.
Your benefit: With the right UV dose, you can achieve targeted, effective, and chemical-free disinfection of microorganisms.
The dose principle: Time × Intensity = Effectiveness
The effectiveness of UV-C disinfection depends on two factors: exposure time and light intensity. The product of both is expressed as mWs/cm².
Microorganisms with simple structures (e.g. bacteria) can be deactivated with a low dose, while more complex organisms such as fungi and spores require higher energy levels.
Your benefit: By adjusting the UV dose, you gain full control over disinfection performance – tailored exactly to your process needs.
Safe, Reliable, Chemical-Free
Hoenle UV-C lamps operate mainly at 254 nm and 185 nm – except for pulsed light. For food applications, only ozone-free emitters are used to guarantee safe and residue-free disinfection.
A major advantage of UV-C disinfection: microorganisms cannot develop resistance. It remains effective even when bacteria or viruses are resistant to alcohol, antibiotics, or other conventional methods.
Your benefit: With decades of expertise, reliable technology, and proven UV-C dosing, you can achieve consistent results – whether against E. coli, SARS, Legionella, or mold.
UV-C technology is scientifically validated and recognized in international standards:
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Water disinfection: Certified according to DVGW and Austrian Standard
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Air handling systems: Regulated by VDI 6022
⚠️ Safety note: UV-C radiation must be applied with shielding, as direct exposure can cause skin redness or eye irritation. Standard window glass and most plastics block UV-C light.