ILT770-NB Economical Light Meter for Disinfection Light Sources at 254 nm


ILT770-NB Complete System For Measuring 254 nm UV Germicidal/Disinfecting Light Sources

Part Number: ILT770-NB US

Narrow Band 254 nm Anti-Microbial / Disinfection Light Meter


ILT770-NB Response Curve

System Benefits:

  • Measures germicidal UV from 249- 259 nm with Narrow Band 254 nm filtration/calibration
  • Irradiance Range: 0.02 mW/cm2 to 400 mW/cm2 
  • Dose Range: 0.02 mJ/cm2 to 999 KJ/cm2  
  • ISO/IEC 17025:2017 Accredited, NIST traceable calibration for results you can trust
  • Portable, hand-held system 
  • Easy-to-use interface
  • Made in the USA


Complete System Includes: 

  • ILT770 light meter
  • Detector with built-in 254 nm narrow band filter 
  • Calibration certificate 
  • USB cable for use data downloads and device charging 
  • Rugged carrying case


Browse All Configured UVC Systems





Browse  All Light Measurement Systems


Simplifying UV-C Light Measurement


The ILT770-NB UV intensity meter and measurement system as everything you need to start validating the 254 nm light output from your anti-microbial / germicidal / UV disinfection system. It's not enough to trust the manufacturer's specifications. You must verify that the system you're entrusting the health and well being of your patients to is doing what it says - deactivating germs and killing pathogens.

The  ILT770-NB is specifically configured and calibrated to 254 nm where most pathogens, including the COVID-19 virus, are deactivated (See graph above). The ILT770-NB's narrow band filter is specifically designed to measure UV systems, such as low-pressure mercury, with a peak irradiance at the 254 nm wavelength.  Regardless of the light source your system uses, with the touch of a button the ILT770 will do the following:

  • Confirm the amount of light reaching a surface
  • Calculate the dose in J/cm2
  • Graph the output over time
  • Validate the Min max and average irradiance (mW/cm2
  • Save the results for exporting to your PC

Validating your UV disinfection system does not need to be a complex task.  The ILT770 simplifies light measurement by automatically selecting the input range (auto-ranging) so the user does not need to manually dial it in.  Easily toggle between irradiance and dose readings with a single button. The graphical interface not only displays the uniformity of the light over time, but also calculates the min, max and average.  The detector is attached with 3' cable, reducing the risk of user exposure. The Sensors low profile housing makes lamp access easy.

ILT is an USA-based company.  We have been designing light measurement systems since 1965.  All of our meters are built and calibrated on-site at our Peabody, Massachusetts head quarters.  We are an ISO9001 certified facility and our calibration lab is ISO17025 accredited.  All of our meters come with an ISO17025 accredited calibration certificate and are NIST traceable.  


Disinfection Applications

The ILT770-NB is perfect for validation UV disinfection systems for:

  • Elevators cabs
  • Escalator and moving walkway handrails
  • UV disinfection chambers
  • Air purification systems
  • Water purification systems
  • Remote deployed room disinfection systems
  • Hand-held germicidal lamp disinfection systems


Not sure which system is right for you?  View our side-by-side of the ILT770-UV and ILT770-NB

click for larger image 


Watch the ILT700 Series OEM Video


About Ultraviolet Germicidal Irradiation

Also referred to as UVGI, it is a disinfection method that uses short-wavelength ultraviolet (UV-C) light to kill or inactivate microorganisms by destroying nucleic acids and disrupting their DNA, leaving them unable to perform vital cellular functions.  The ILT770-NB will allow users to verify the output of their lamps is effectively irradiating the exposed areas. 


ILT Product Comparison Chart 


ILT770 comparison chart