UV-C LED Collimated Beam 

Offering Advanced Tools for UV Research

Is Your Research Program Equipped for Rapid Changes in the UV Disinfection Market?

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Use PearlLab Beam™ with Selectable Wavelengths to Better Understand Absorption Spectra  

Bench Scale UV Research

Collimated beams are a critical UV disinfection research

tool. Conventional mercury-based systems have been likened to analog technology now that UV-C LED-based solutions are available. PearlLab Beam allows researchers a greater choice of discrete UV-C wavelengths

e.g. 255, 265, 285, 300, 365nm to do bench scale UV

research. Researchers can now utilize a tool that delivers

multiple germicidal wavelengths to better understand the

absorption spectra for various microorganisms.


Bench scale collimated beam data is vital to identify the UV dose and the effectiveness of specific UV wavelengths for

microorganisms being studied. These units are designed

to expose samples to UV light on a batch basis. The sample is placed in a petri dish under the collimator tube, for a specific time. The output from the lamp is measured using a radiometer. The UV dose is calculated using the time and lamp irradiance data. There are a number of guidance documents that have been created to assist users in conducting this research in a standardized manner.

UV collimating beam for disinfection research
UV Dose-responce curve for E. Coli

The end result of this test is the creation of a dose-response curve for the microorganism under examination.


Dose response curves are a critical input when determining UV system sizing for various water treatment applications.


The International Ultraviolet Association (IUVA) has

consolidated UV dose-response data for various waterborne pathogens and routinely issues updates.

Historically, most UV research has been conducted using low-pressure mercury tube lamps emitting UV light at 254nm, although some work is completed using polychromatic medium-pressure mercury lamps. Monochromatic low-pressure mercury lamps have been more widely used due to cost and ease of use. Over time, the entire UV-C range has been given less importance and the emphasis has been on that accessible wavelength of 254nm. This defacto standard wavelength is not the most optimal amongst those within the germicidal range.


The effectiveness of a particular wavelength depends on the amount of light a pathogen is able to absorb at that particular wavelength. There are many bench scale studies on pathogens showing different absorbance levels at different wavelengths, and, 254nm is never shown as the most effective. The optimal wavelengths vary according to the pathogen, but typically fall in the 260 -270 nm range.

Issues with mercury lamps

  • Large space needed - not easy to store/move​​​​


  • Limited cycles per day​​​​

  • High energy consumption


  • Inconvenient & expensive to filter

Advanced UV-C LED Research for an Advanced Laboratory

Solid-state technology provides several new benefits over analog technology. With developments in ultraviolet light-emitting diodes, these benefits are now extended to UV disinfection. 


The PearlLab Beam is the world's first UV-C LED collimating beam device, taking advantage of solid-state technology. This device is small in size, light-weight, and does not contain fragile glass providing a research tool for the lab but that is also field-ready. The use of UV-C LEDs offer instant on/off  with immediate intensity allowing for exact exposure times. LEDs also provide variable wavelengths. The PearlLab Beam has up to three wavelength options with an activation switch for each wavelength. 


As the disinfection industry advances, researchers will need to stay on the leading edge to avoid falling behind. The PearlLab Beam provides robust features to advance disinfection research. 

PearlBeam Exploded view w labels v.1.19.

PearlLab Beam with UV-C LED lamp

  • Selectable wavelength​​​


  • Narrow band of emission​​​


  • Compact size - easily stored


  • Robust - field-test ready


  • Stable Output over lifetime


  • Intuitive Controls 


  • Instant on/off


  • Unlimited cycles

R&D 100 Awards - 54 years of innovation - PearlBeam selected for analytical/testing category

PearlLab Beam selected as a finalist for the R&D 100 award analytical/test category

Employing UV-C LEDs, the PearlLab Beam is the answer to advancing UV disinfection research