Germicidal UV Light Radiometers & Spectrometers

ILT offers anti-microbial radiometer systems for testing effective germicidal ultraviolet irradiance for most short wave UV (“UV-C”) sources including ozone producing and non-ozone producing, low and medium pressure mercury lamps, xenon lamps and UV LEDs. ILT sensors come in many configurations – effective germicidal UV light measurements conforming to the IES Luckiesh and DIN standards. Filtered for narrow bands such as 254, 365, and 405 nm, and unfiltered sensors calibrated at peak wavelengths such as 254, 265 and 275 nm for testing narrow band sources.

UV light is sub-divided into 3 distinct UV wavelength ranges (ISO-21348):

• UVA:  315nm – 400 nm
• UVB:  280nm – 315nm
• UVC:  100nm – 280nm

Use of ultraviolet light for germicidal UV light disinfection (typically UV-C) is a technology which can be applied to air, water and surfaces.

Configured UVGI / UVC Light Measurement Systems

In an effort to help customers combat the COVID-19 pandemic, ILT has assembled systems to configured to measure common sources used in UVC disinfection systems.  All meters come with a detector, carrying case and ISO/IEC 17025:2017 accredited calibration.

Ultraviolet Germicidal Irradiation (UVGI) rapidly replacing traditional disinfection methods

Germicidal disinfection by exposure to ultraviolet (UV) light is seeing rapid deployment in food, pharmaceutical, hospitality, and medical markets throughout the world due to the effectiveness, ease of use, adaptability and relatively low expense of the technology as compared with the more complex, time consuming and costly methods currently in use such as chemical, steam, or heat disinfection.

UV Light

UV irradiation kills a broad range of microbes, in essence breaking the molecular bonds that hold the organism’s DNA together.  The most effective wavelength for accomplishing this is 263 nanometers (nm). However the most commonly used light sources have peaks ranging from 250 nm to 285 nm with both narrow band and broadband outputs.

Medium pressure UV lamps are typically utilized in applications requiring high intensity germicidal UV exposure where the large numbers of  LED or Hg lamps required to meet the intensity levels would be impractical due to cost and space, such as in large volume municipal water treatment facilities.

Due to their lower cost, low pressure Mercury (Hg) lamps which emit about 93% of their output 254 nm have traditionally been utilized in low to medium intensity germicidal applications such as food processing, low volume water treatment, and medical service and manufacturing.

Recent improvements in UV-LED flux density, stability and life hours have made UV-LEDs a viable solution for replacing traditional UV light sources such as mercury arc lamps, arch lamps, hot and cold cathode lamps and grid lamps. UV LEDs are more environmentally friendly as they do not contain harmful mercury, do not produce ozone and consume less energy

ILT Anti-Microbial and UV Disinfection Light Measurement Systems

ILT offers a wide range of pre-configured anti-microbial and disinfection light measurement systems.