UVC Dosimeter™ Verifies UVC Exposure

The UVC dosimeter™ is a safe and efficient tool that can be used to verify UVC exposure of a surface, or an instrument, in healthcare environments, including patient rooms and surgical suites; in laboratories; and also, in food and beverage manufacturing and processing facilities.

The technology consists of a photo-chromatic ink that changes color when it is stimulated by certain UVC radiation (253.7 nm). The UVC Dosimeter from American Ultraviolet:

  • Can increase the efficiency of UV disinfection processes by running shorter cycle times and providing real–time results.
  • Changes color at various energy levels, which correlates with published "k" values for various microorganisms.
  • Measures specific wavelengths of UVC radiation 253.7 nm.
  • Is available in quantities of 50 and 100.
  • Has been tested in laboratory and hospital environments in the United States, Sweden, and the United Kingdom.

UVC dosimeter

Click here to watch a video on how to use the UVC Dosimeter.

Click here to see Dosimeter change colors when exposed to UVC intensity for C.Diff and MRSA.

Verify UVC Exposure for all Ultraviolet Equipment you use. Buy Now.

Please review the following documents to learn more about the American Ultraviolet UVC Dosimeter:

Ultraviolet-C decontamination of a hospital room: Amount of UV light needed. (October 2019. ScienceDirect). Learn More

Assessment of Organism Reduction and UVC Dosimeter Color Change Due to UVC Output (PDF - 1MB)

RISE Report – UVC Exposure (254 nm) of UV Sensitive Material at Different Irradiation Levels (PDF - 275K)

UVC Dosimeter Status

UVC Dosimeter before dosage delivered

Center of UVC Dosimeter changes to orange to show that a level of energy lethal to MRSA has been delivered

UVC Dosimeter before dosage delivered

Center of UVC Dosimeter is yellow before dosage is delivered

UVC Dosimeter before dosage delivered

Center of UVC Dosimeter changes to pink to show that a level of energy lethal to C.Diff has been delivered




Visit the Disinfection Update E-newsletter archives (which begin with March 2020) to read helpful stories about the effectiveness of UVC Disinfection.

None of the American Ultraviolet UVC products detailed above are certified, or approved under any applicable laws, as a medical device, and as such, American Ultraviolet, and its Representatives and Distributors, do not currently intend for them to be used as medical devices anywhere globally. Products have not been evaluated by the FDA.