UV-C LED Collimated Beam Offering Advanced Tools for UV Research Is Your Research Program Equipped for Rapid Changes in the UV Disinfection Market? UV-C LED Devices, with Selectable Wavelengths Help 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. UV-C LEDs allow researchers a greater choice of discrete UV-C wavelengths e.g. 255, 265, 285, 300, 365 nm 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. 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 254 nm, 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 254 nm. 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, 254 nm 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 PearlBeam™ 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 PearlBeam 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 PearlBeam provides robust features to advance disinfection research. 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 Employing UV-C LEDs, the PearlBeam is the answer to advancing UV disinfection research. Learn more about the PearlBeam.