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    Validation of UV-C lighting’s effectiveness on disinfecting the air

    March 4, 2021

    Signify and Innovative Bioanalysis validate effectiveness of Signify’s UV-C lighting on disinfecting the air


    • Test results show that UV-C upper-air disinfection luminaires inactivated 99.99% of SARS-COV-2 in the air of a room within 10 minutes


    Eindhoven, the Netherlands – Signify (Euronext: LIGHT), the world leader in lighting, together with Innovative Bioanalysis, a CAP, CLIA, AABB Certified Safety Reference Laboratory in Costa Mesa, California have conducted research that validates the effectiveness of UV-C upper-air disinfection luminaires on the inactivation of SARS-CoV-2, the virus that causes COVID-19. The UV-C upper-air disinfection luminaires inactivated 99.99% of SARS-CoV-2 in the air of a roomwithin 10 minutes, and the virus was below detectable levels at 20 minutes.2

    Based on the understood method by which UV-C exposure deactivates pathogens, we would expect UV-C disinfection lighting to have a similar impact on the various genetic mutations (of SARS-CoV2)."


    Sam Kabbani
    Chief Scientific Officer at Innovative Bioanalysis

    “These test results illustrate the effectiveness of our UV-C upper-air disinfection luminaires and the important contribution they can make towards fighting the coronavirus and future viruses,” said Harsh Chitale, Division Leader, Digital Solutions at Signify. “UV-C lighting for upper-air applications can be a successful, preventive measure for organizations as they seek ways to provide their guests, customers and employees with clean environments.”


    Over the last year, Signify increased the production of its UV-C light sources eight-fold in support of the fight against the coronavirus and acquired GLA to complement its portfolio with luminaires for upper-room air disinfection. Since then, the company has installed UV-C upper-air disinfection luminaires in several locations, including retailers EDEKA Clausen in Germany and dm in Slovakia and Rugby Union Club Harlequins in the UK.

    The height at which the luminaires are installed, in combination with the luminaires’ design, allows the system to disinfect air as it circulates a space, even when there are people present. Mechanical ventilation and/or natural convection moves the disinfected air back into the lower part of a space. Additionally, shielding and optics in the luminaires are designed to prevent accidental exposure to UV-C radiation.3

    For more than 35 years, Signify has been at the forefront of UV technology, and has a proven track record of innovation and strong application expertise in UV-C lighting. Signify’s UV-C lighting is designed and manufactured using well-controlled industrial processes, and should be installed and used according to the product-specific safety instructions. UV-C light should always be used by professionals in accordance with the safety requirements and instructions.

    1 Tests were conducted with Philips UV-C upper-air, wall mounted disinfection luminaires. The overall dimensions of the test chamber were approximately 8’x8’x10’, compliant with Biosafety Level 3 standards.

    2 According to results obtained from a laboratory test conducted by Innovative Bioanalysis, a CAP, CLIA, AABB Certified Safety Reference Laboratory, in a room with sufficient air circulation. For more information, please refer to the test report here.

    3 The germicidal effectiveness of UV-C light sources is proportional to the exposure time of the microorganism to the UV-C light source and the intensity of the UV-C light source. Therefore, sufficient air flow in the room (which may be achieved through forced air flow or natural convection) is required for effective operation of Signify’s UV-C upper-air disinfection luminaire solutions.

    For further information, please contact:


    Signify Corporate Communications

    Elco van Groningen

    Tel: +31 6 1086 5519



    Signify North America Corporation

    Beth Brenner

    Tel: +1 215 595 3102


    About Signify


    Signify (Euronext: LIGHT) is the world leader in lighting for professionals and consumers and lighting for the Internet of Things. Our Philips products, Interact connected lighting systems and data-enabled services, deliver business value and transform life in homes, buildings and public spaces. In 2022, we had sales of EUR 7.5 billion, approximately 35,000 employees and a presence in over 70 countries. We unlock the extraordinary potential of light for brighter lives and a better world. We achieved carbon neutrality in our operations in 2020, have been in the Dow Jones Sustainability World Index since our IPO for six consecutive years and were named Industry Leader in 2017, 2018 and 2019. News from Signify is located at the Newsroom, Twitter, LinkedIn and Instagram. Information for investors can be found on the Investor Relations page.

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