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We use cookies to provide you with a great user experience. By using XtraLight, you accept our use of cookies. Accept * Products * What's New * Rep Locator * Markets * Blog * Resources * Company CHAT +1 (800) 678 6960 Get Pricing InSight An XtraLight Blog Notification Frequency Lifecycle Stage * Recent Posts * News * Industry * Specs * Products * Awards UV DOSAGE FOR DISINFECTION By Cameron Dillehay May 6, 2020 8:22:19 AM Education Products Industry Ultraviolet Viruses, bacteria, mold, and other pathogens are now stopped dead in their tracks with XtraLight's UVC High Power Ultraviolet Disinfection System. Follow these steps when using this effective and powerful light which emits 254 nm wavelengths. The results will amaze you and give you peace of mind. UVC STEPS TO DISINFECTION: STEPS: 1. FOLLOW SAFETY GUIDELINES 2. UNDERSTAND BASIC UVC TERMS 3. IDENTIFY UV DOSE 4. SURVEY AREA TO BE DISINFECTED 5. CALCULATE ESTIMATED UV EXPOSURE TIME FOR DISINFECTING 6. DISINFECT AREA AND VALIDATE WITH DOSIMETER CARDS All surfaces within a certain distance will observe an assured level of disinfection in a certain amount of time as long as the wavelengths are not blocked from accessing the surface. -------------------------------------------------------------------------------- STEP 1 FOLLOW SAFETY GUIDELINES Do's Don’t 's * Protect your eyes * Use protective PPE gear * Establish a plan to disinfect area * Use safety timers * Train personnel in using UVC disinfecting system * Use hazard warning signs when in use * Keep fixture in protective case * Don’t expose eyes & skin to UVC * Don’t allow anyone to operate UVC fixture without reading safety instructions * Don’t allow anyone into area being treated with UVC * Don't touch the UVC lamps while operating * Excessive exposure to UVC can cause adverse effects on the eyes, retina, skin, circadian system, and immune system. * Human over exposure causes temporary skin redness and harsh eye irritation. * Symptoms may take 4 to 24 hours to occur after exposure. STEP 2 UNDERSTANDING BASIC UVC TERMS RADIANT EXPOSURE = J/m2 or mJ/cm2 * UV INTENSITY (I) = energy per unit surface area * EXPOSURE TIME (T) = exposure time in seconds * UV DOSE (FLUENCE) = Intensity (I) x Time (T) expressed as mJ/cm2 LOG REDUCTION = percentage of microorganisms inactivated * EXAMPLE: a 1 log reduction will reduce the pathogen by 90%, before the UVC disinfection a 2 log reduction will reduce the pathogen by 99%, etc… -------------------------------------------------------------------------------- STEP 3 IDENTIFY UV DOSE * IDENTIFY TARGETED MICROORGANISMS * PAIR WITH LOG REDUCTION. PATHOGENS Common Name Scientific Name 3 Log Reduction Viruses Rota Rotaviruses (Human) 32 mJ/cm2 Infectious Hepatitis Hepatitis B 25 mJ/cm2 Adenovirus 126 mJ/cm2 ECHO Virus Echovirus 25 mJ/cm2 Bacteria Salmonella Salmonella Typhimurium 22 mJ/cm2 Staph Staphylococcus aureus 3.2 mJ/cm2 (2 log) Strep Streptococcus faecalis 9.8 mJ/cm2 * UV dose determines what proportion of a specific microorganism is destroyed after a particular dose of UV radiation Target 50 mJ/cm2 to deactivate the average bacteria/virus Example from Log Reduction Example from Log Reduction DOWNLOAD UV DOSE LOG REDUCTION GUIDE -------------------------------------------------------------------------------- STEP 4 SURVEY AREA TO BE DISINFECTED * MEASURE DIMENSIONS OF AREA TO BE DISINFECTED USING MOBILE UNIT * TARGET UV DOSE is 50 mJ/cm2 * PLACE DOSIMETER CARDS ON TARGETED AREAS FOR VALIDATION OF UV DOSE Our testing Data: XLM Product UV Intensity Exposure Time Radiance Exposure Distance Handheld 2.8 mJ/cm2 17 sec 50mJ/cm2 4 in. Mobile .34 mJ/cm2 6 min 50mJ/cm2 5 ft Mobile .08 mJ/cm2 17 min 50mJ/cm2 10 ft Mobile .03 mJ/cm2 28 min 50mJ/cm2 15 ft STEP 5 CALCULATE ESTIMATED EXPOSURE TIME FOR DISINFECTING * DETERMINE PLACEMENT OF MOBILE UNIT AND NUMBER OF UNITS TO DISINFECT AREA * CALCULATE EXPOSURE TIME = UV INTENSITY (at a specified distance) / UV DOSE / 60 SECONDS * UV DOSE = 50 mJ/cm2 -------------------------------------------------------------------------------- STEP 6 DISINFECT AREA AND VALIDATE WITH DOSIMETER CARDS * Color changes from yellow to orange validates 50 mJ/cm2 delivered * Color changes for orange to pink validates 100 mJ/cm2 delivered * Exit the room and run disinfection cycle * Verify exposure of card and make notations on the card to document the color change * Make exposure reading within 24 hours after disinfection * Retain or discard the card in accord with site requirements * 1 time use of dosimeter cards Order UVC Products Here To learn more about UV disinfection click here * * * * CAMERON DILLEHAY Cameron is a marketing specialist at XtraLight LED Solutions. He is affluent in UI/UX website design, Graphic Illustration, 3D Rendering/Animation, SEO optimization, Videography, and enjoys enlightening customers with innovative LED technology. "The best marketing doesn't feel like marketing." - Tom Fishburne Return Next * +1 (888) 204 8322 * info@xtralight.com * 8812 Frey Road, Houston, Texas USA * * * * * * LED Lighting Products * Rep Locator * Company * Markets * Contact * Blog * News * Careers * Intranet -------------------------------------------------------------------------------- XTRALIGHT © 2022