Is Blue Light Disinfection Safe for Humans?

Designed for use in occupied environments

Blue light disinfection uses visible light, not ultraviolet radiation. This makes it fundamentally different from UV-based systems and suitable for use in rooms where people are present. Spectral Blue systems operate in the 405-450 nm range - well within the visible spectrum - and are designed to continuously reduce microbial levels without producing ozone, residues, or harmful emissions.

Tested and compliant with international safety standards

All Spectral Blue devices are tested according to IEC 62471 and IEC TR 62778, which define exposure limits for photobiological safety. These standards ensure that irradiance levels remain well below thresholds for skin and eye safety.

Our patented Spectral Blue MWHI® (Multi-Wavelength High-Intensity) technology delivers strong antimicrobial performance while staying within the limits that are considered safe for normal work environments. The same light spectrum is also used in several medical and therapeutic applications, further demonstrating its safety profile.

Smart control improves safety and comfort

While blue light disinfection is safe for routine use, direct staring into any bright light source is never recommended.

For extra precaution and operator comfort, we recommend using a motion detector or occupancy sensor to automatically adjust or switch off the light when people are nearby, and turn it back on when the area is vacant.

This ensures both optimal disinfection coverage and a pleasant working environment, even during long shifts.

No damage to materials or surroundings

Because blue light is non-ionizing, it does not cause material degradation or corrosion. It is safe for use around stainless steel, most plastics, packaging materials, and other sensitive surfaces. It also generates no ozone or chemical residues, making it ideal for cleanrooms, laboratories, and food production areas.

Safe, continuous, and responsible

Spectral Blue devices are built to operate safely in real-world environments. When installed according to our guidelines and combined with simple safety practices - such as presence-controlled operation - they provide continuous microbial control without affecting people, materials, or workflows.

In summary: blue light disinfection is a safe, visible-light technology designed for occupied spaces. It offers continuous protection while maintaining full compliance with international safety standards.

- For more information the safety of antimicrobial blue light, please read our safety section.