Is UV-C Light Safe? Risks, Precautions and What to Look For

 UV-C is one of the most effective tools available for eliminating bacteria, viruses, moulds and spores often within just a couple of minutes of exposure. But that same power that makes it so effective against microorganisms also makes it potentially harmful to people.

Understanding how UV-C works, and what safeguards to insist on, is essential before introducing it into any workplace, healthcare setting, or shared environment.

 What Makes UV-C Dangerous to Humans?

UV-C radiation is not only damaging to microorganisms, direct exposure is also injurious to human health. The risks include:

  • Eye damage: The clear surface of the eye is particularly vulnerable to UV-C wavelengths. As Dr Jesse Sengillo, an ophthalmologist at the Bascom Palmer Eye Institute of the University of Miami Health System, has noted, the cornea is highly susceptible to this specific wavelength of light.
  • Skin damage: UV-C can cause burning to the skin, and research published in Cell Reports has directly linked UV-C rays to DNA mutations that may increase the risk of skin cancer.

These risks do not mean UV-C cannot be used safely, they mean it must be used within properly designed, certified equipment.

 What Is IEC 62471 and Why Does It Matter?

When choosing any UV-C product, always insist on devices that have been tested and certified to IEC 62471 the international standard for photobiological safety.

This rigorous testing confirms that no harmful UV-C radiation escapes the confines of the device during normal operation, and that accidental exposure is prevented by design. Without this certification, there is no reliable guarantee that a product is safe to use around people.

All Uvisan UV-C cabinets are tested and certified to IEC 62471. The lethal power of UV-C is directed only at the microorganisms on the surface of the devices you choose to disinfect, not at the people using the equipment.

Warning Signs to Watch for in UV-C Products

Not all UV-C products on the market meet adequate safety standards. Before purchasing, check that none of the following apply:

  • The product is not certified to IEC 62471
  • There are vents, gaps or slots in the walls or doors that could allow UV-C radiation to escape  if you can see into the device, UV-C can get out
  • The UV-C source does not automatically shut down when the door is opened, or the device can be operated with the door open
  • The UV-C source generates ozone, which presents a separate risk of lung damage 

Any one of these failings can expose users or staff to harmful UV-C radiation or, in the case of ozone-generating products, to damage to the respiratory system.

How Uvisan Keeps Users Safe

Uvisan cabinets are designed from the ground up with safety as a priority. Every product is certified to IEC 62471, includes automatic shut-off when the door is opened, and is engineered to contain UV-C entirely within the disinfection chamber.

With Uvisan, you can be confident that the only things harmed by our cabinets are the pathogens on your headsets and shared devices.

Conclusion

UV-C disinfection is a powerful, proven, and chemical-free method of eliminating harmful microorganisms. Used in properly certified equipment, it is entirely safe for operators and bystanders.

The key is choosing products that meet established safety standards. Always ask for IEC 62471 certification and be cautious of any UV-C device that cannot demonstrate it.