Note: Product packaging and dosimeter card designs may vary by region and distribution partnerships.

    For 254 Devices

    254 TRI Check

    UVC 254 TRI Check provide visible evidence of successful germicidal irradiation.

    Using a patented, photochromic ink, TRI Check dosimeters react to UV-C at 254 nm. These color-changing indicators are ideal for use with UV-C disinfection systems and help you validate your devices, procedures and visibly see if target surfaces have received enough germicidal irradiation to kill harmful bacteria, viruses and spores.

    Product Details

    This new design offers a larger indicator area and color references for 25, 50 and 100 mJ/cm². The dosimeter also provides a visible check mark when exposed to UVGI.

    • 2.5″ x 3.5″ cards with adhesive backing
    • Designed for use with UV-C 254 nm devices
    • Color-indicates 25, 50 and 100 mJ/cm²
    • Single use only. Do not reuse.
    • Packaged 25 units per bag
    • 3-year shelf life
    • Store at room temperature in original packaging and away from direct sunlight.
    • Private label and customization available for orders of 5,000+
    Instructions for Use
    • To use, peel off the protective strip to expose the adhesive and place the dosimeter on or adjacent to any equipment or surface that will be disinfected with ultraviolet germicidal irradiation. Make sure the yellow indicator area faces toward the UV-C light source.
    • After the disinfection cycle is complete, confirm the color change on the cards immediately or within 24 hours for best results.
    • UVC Dosimeters are intended for one-use-only and should not be reused. Store at room temperature and away from direct sunlight.
    Sales Sheet
    Log Sheet
    • Click here to download a printable 254 TRI Card Log Sheet (PDF Format)
    • For your convenience, this document has been formatted for use with a 3-ring hole punch and binder.
    Recommended Uses

    This product is recommended for use with UV-C disinfection systems in all public locations including:

    • Healthcare facilities
    • Doctor / dental practices
    • Schools / universities
    • Airports
    • Hotels
    • Restaurants
    • Casinos
    • Libraries
    • Correctional facilities
    • Commercial spaces

    PLEASE NOTE: This product is designed to work with 254 nm UV-C devices.


    Patented photochromatic ink changes color to indicate the level of UV-C irradiation on surfaces (254 nm)


    Visibly demonstrates the accumulated dose of UV-C so you can confirm that a surface has received an optimal level of germicidal irradiation.


    Recommended for use with UV-C disinfection systems in healthcare facilities, physician and dental practices, commercial spaces and more


    Validated by leading researchers in the U.S., U.K. and Sweden and trusted by UV-C manufacturers throughout the world. UVC Dosimeter by Intellego have been used in multiple US research studies to confirm UV-C effectiveness.


    Great for in-servicing, staff training, validating UV-C lamp performance, and as a simple reporting tool for Infection Control and Environmental Services