Day-Brite by Signify  - General purpose and performance lighting
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    Disinfection with the Power of Light

    ALKCO Germicidal UV luminaires

    Signify has been a world leader in UV-C source manufacturing delivering solutions for over 35 years to disinfect air and surfaces. Each Alkco product is uniquely designed with wellness and safety in mind, including products utilizing UV-C technology to combat against harmful viruses, bacteria, molds and spores.1


    Download UV-C solutions for Education

    Improving air flow quality with upper air solutions

    Alkco infographic

    Upper air commercial-off-the-shelf ​solution​s can...


    • Help reduce risk of exposure to bacteria, viruses, and spores​
    • Help provide comfort, satisfaction, and perception of a more secure environment
    • Help enable continuity of space usage by reducing disinfection cycle time​



    • Sales Bulletins

    UV-C Education Bulletin

    UV-C Louvered Wall Bulletin

    UV-C 2x2 Grid Ceiling Bulletin

    • Case Studies

    UV-C upper air ‘workout spaces”

    UV-C upper air ‘meeting spaces”

    UV-C upper air ‘shopping spaces”

    UV-C upper air ‘recreational facility”

    UV-C upper air ‘retail grocery”

    UV-C upper air installation tools & resources   

    Germicidal UV Specsheets

    Learn more about our UV-C Controls Systems​

    Alkco products


    A broad range of UV-C germicidal luminaires

    UV-C lighting has the power to disinfect air, surfaces and water

    In laboratory testing, Signify’s UV-C light sources inactivated 99% of SARS-CoV-2 virus on a surface with an exposure time of 6 seconds.2


    A word of caution

    UV-C products present minimum risk when used by professionals who know how to use them. They must shield their eyes and skin to avoid light damage and severe injuries to the eyes and skin.


    At this moment, none of our UV-C products are certified or approved under any applicable laws as a medical device and as such, Signify and/or any of its group companies do not currently intend for them to be used as medical devices anywhere in the world.


    Fluence (UV Dose) Required to Achieve Incremental Log Inactivation of Bacteria, Protozoa, Viruses and Algae Revised, updated  and expanded by Adel Haji Malayeri, Madjid Mohseni, Bill Cairns and James R. Bolton. With earlier contributions by Gabriel  Chevrefils (2006) and Eric Caron (2006) With peer review by Benoit Barbeau, Harold Wright (1999) and Karl G. Linden.


    2Data made available to us by the National Emerging Infectious Diseases Laboratories (NEIDL) at Boston University (to be the subject of a forthcoming scientific publication) shows that Signify’s UV-C light sources irradiating the surface of a material inoculated with SARS-CoV-2 (the virus that causes the COVID-19 disease) resulted in a 99% reduction of the SARS-CoV-2 virus at a UV-C dose of 5mJ/cm2 (exposure time 6 seconds). This study further determined that a 99.9999% reduction of the SARS-CoV-2 virus would result from applying a UV-C dose of 22mJ/cm2 (exposure time 25 seconds). Research variables are available upon request.