UVC DISINFECTION SYSTEMS GUIDE - FREE e-BOOK
Dobmeier Institutional Cleaning Experts Review The Latest UVC Disinfection Systems From Diversey And Pure Protective Equipment
The Institutional Cleaning Experts at Dobmeier Janitorial Supplies Outlet provide insights into the latest UVC Disinfection systems. Covering systems for disinfection of room surfaces, room air and device surfaces this range of equipment provides 99.9%-99.9999% inactivation claims for a wide range of pathogens. For safe and effective use of these products, always follow the manufacturer's instructions.
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This UVC Disinfection Systems Guide is presented in 5 Sections:
UVC Disinfection Overview
Available UVC Sources
Choosing The Right UV-C Disinfection System
FREE UVC Disinfection Evaluation
UVC Disinfection Overview
The Electromagnetic Spectrum with Ultraviolet Expanded To Show Far UV, UVC, UVB, UVA
What Is UVC?
UltraViolet (UV) light is an invisible part of the Electromagnetic Spectrum, lying between visible light and x-rays, having wavelengths in the range 100-400nm. Scientists categorize UV radiation, by wavelength, into 4 Types:
- UV-A with 315-400nm wavelength
- UV-B with280-315nm wavelength
- UV-C with 200-280nm wavelengths
- Far UV with 100-200nm wavelengths
Even though the entire electromagnetic spectrum is emitted from the sun, the amount of UV-C that reaches the earth’s surface is negligible.
UVC For Disinfection
In multiple studies, UVC has been found to be effective in Disinfection - because it Inactivates pathogens including bacteria, viruses, and spores, by rupture of cell walls and can cease their DNA replication process.
UVC emitting "Germicidal" lamps have been developed for the specific purpose of disinfection. To be effective, these lamps must provide a sufficiently high Dosage of UVC to damage microbes beyond the point that they can repair themselves. Different pathogens require different dosages to reach this inactivation point. Dosage is a function of UVC Intensity and Exposure Time, and UVC Intensity diminishes rapidly with distance from the lamp.
For a specific lamp, a specific distance, and a specific microbe, we can use Log Reduction Value (LRV) as a measure of the amount of microbes eliminated by UVC in a specific time:
- LRV=1 inactivates 90% of microbes (one 9)
- LRV=2 inactivates 99% of microbes (two 9s)
- LRV=3 inactivates 99.9% of microbes (three 9s)
- LRV=4 inactivates 99.99% of microbes (four 9s)
- LRV=5 inactivates 99.999% of microbes (five 9s)
- LRV=6 inactivates 99.999% of microbes (six 9s)
There are several UVC systems available for disinfection in institutional and office environments, and we will consider the most effective ones in this guide.
UVC Disinfection Systems
UVC Disinfection Systems From Pure Protective Equipment & Diversey
UVC Disinfection System Effectiveness
UVC has been used for decades to disinfect air, water, and surfaces - and many Limiting Factors are well understood:
- UVC can only inactivate a pathogen by direct irradiation. Therefore, any blockage of the UVC radiation by soils such as dirt, dust, liquids… can decrease the effectiveness of disinfection on surfaces, and microbes sheltered by surface pores, or other structures, may remain active.
- To attain a higher LRV requires a stronger dosage of irradiation. So, some low-power lamps, sold for home use, typically require long exposure times and very close proximity to the surface to be disinfected.
- UVC exposure to human eyes and skin has been associated with injury, so UVC lamp installation and operation should be performed following manufacturers guidelines so that human exposure to damaging radiation cannot occur.
Available UVC Sources
A number of different lamp technologies have been developed to generate UVC Radiation for disinfection applications.
These different lamp types offer different benefits and limitations, including risk to human health.
UVC Lamp Risks
With several devices obtaining FCC and UL Certification, UVC disinfection is rapidly being adopted as the primary disinfection protocol in healthcare facilities, schools, and businesses. However, UVC irradiation has some potential for risk to human (and animal) health, depending on the light intensity and exposure time. Well-documented risks include eye injuries and skin burns due to UVC exposure above 230nm wavelength. Some UVC disinfection systems may also generate Ozone, which is a known irritant for the respiratory system. Additionally, Low-Pressure Mercury UVC Lamps contain Mercury, a known toxin and carcinogen, so breakage of liquid mercury lamps poses a threat, and disposal procedures should follow manufacturer guidelines.
UVC is also known to degrade many common plastics, and can have a bleaching effect on dyed fabrics.
To ensure health & safety, all UV-C disinfection systems must be installed, maintained, and operated only in strict accordance with the instructions and guidelines provided by the manufacturer/p>
UVC Lamp Types
Low-Pressure Mercury UVC Lamps
Low-Pressure Mercury UVC lamps have been in common use for disinfection for decades, and some have been developed to produce >90% of emitted radiation at a wavelength of 254nm (posing a potential human health risk). Other wavelengths emitted are in the UV, Visible, and InfraRed (IR) light range.
When switched on, Mercury lamps start with only about 50% light output, and may take several minutes to warm up to full operating temperature in order to provide 100% output. Also frequent on-off cycling reduces service life.
Mercury lamps may convert up to 40% of electrical power into UVC radiation for disinfection applications, so the power density and emitted radiance of these bulbs is considered to be relatively low compared to some other UVC sources. Consequently, depending on the distance from the bulb, it may require a significant irradiation time to provide a dose that is sufficient to inactivate pathogens.
Some of these lamps are manufactured using a mercury amalgam, instead of liquid mercury, which reduces health risks from breakage.
UVC Excimer Lamps
UVC Excimer lamps have been developed to produce a peak emission at a "Far UVC" wavelength of 222nm. Manufacturers claim that this wavelength is not harmful to humans and that, with filtering out of longer wavelengths, these lamps may be safely used in occupied spaces. Excimer lamps can provide 100% light output in less than a second and service life is unaffected by frequent on/off cycling.
Pulsed Xenon UV-C (PX UV-C) Lamps
Xenon lamps emit a broad spectrum of light in the range of wavelengths 100-2000nm (UV-Visible-IR). Pulsed Xenon lamps emit UVC in short, high-intensity, pulses - and it is claimed that they require a shorter duration of exposure to achieve pathogen inactivation doses. Pulsed light energy may be delivered instantaneously with a power of several MegaWatts.
These systems have found applications in sterilizing food processing equipment, pharmaceuticals, and cleanrooms. They are also used in many industrial processes requiring high power density, but direct exposure to their radiation poses a risk to human health.
Light Emitting Diode (LED) UVC Lamps
LEDs characteristically emit UVC in a narrow band of wavelength, and currently available lamps offer peak wavelengths at 265nm, 273nm, and 280nm. LED sources offer instant high intensity, have a smaller surface area and higher directionality than Mercury lamps, and they are not sensitive to on-off cycling.
These lamps are ideal for disinfection application in on-demand water dispensing systems, but direct exposure to their radiation poses a risk to human health.
Choosing The Right UVC Disinfection System
Dobmeier offers a range of high-quality UVC disinfection systems to suit your needs:
1. Mobile UVC Room Surface Disinfection Systems
2. Fixed Ceiling Space UVC Air Disinfection Systems
3. Dedicated Mobile Device & Keyboard Surface UVC Disinfection Systems
All of these systems can provide proven disinfection service when installed, maintained, and operated correctly.
1. Mobile UV-C Room Surface Disinfection Systems
We will consider 2 different systems from highly respected manufacturers in the UVC Disinfection System Industry.
UVC Lightforce Disinfection Systems 62inch High Model A & 44.5inch High Model B, From Pure Protective Equipment
UVC Lightforce from Pure Protective Equipment is a room surface disinfection system available in 2 models:
- 62inch high Model A - MORE INFORMATION ON UVC Lightforce Model A >>
- 44.5inch high Model B - MORE INFORMATION ON UVC Lightforce Model A >>
Both models utilize 8 low-pressure Mercury lamps in an octagonal array. These lamps emit UVC in the range of wavelengths from 246-262nm, and must be operated only in unoccupied rooms. Each model comes with a timer and requires a 3 minute warmup period before the sanitization period begins.
UVC Lightforce is an economical and low-maintenance solution that is easy to transport, has an ultra-quiet cycle of operation, and delivers a powerful LRV=3 UVC dosage for 99.9% effective pathogen inactivation. Actual UVC Dose (measured in mj/cm2) depends on distance and irradiation time, as provided by the manufacturer (for Model A) in the table:
Moonbeam 3 UVC Disinfection Systems From Diversey
The Moonbeam 3 from Diversey comes with 3 UVC LED lamps located on articulating arms that allow for broad area disinfection or targeted high-intensity disinfection of particular areas or equipment in as little as 3 minutes. This UVC disinfection solution must also only be operated in unoccupied rooms, so it comes with a remote control unit.
MORE INFORMATION On Moonbeam 3 >>
Moonbeam 3 Accesories >>
Room Surface UV-C Disinfection Applications
These mobile room surface UVC disinfection systems are recommended for use in Doctors & Dental Offices, Patient Rooms, Intensive Care Units, Oncology Units, Emergency Rooms, Operating Rooms, Bio-Pharma, Bathrooms & Restrooms, Education, Classrooms, Sports & Fitness Facilities, Industrial Facilities, Foodservice...
As with all UVC disinfection equipment, these units can only provide effective disinfection on surfaces that have a direct line of sight to the UVC lamps. This often means that the units have to be moved into 2 or more positions within the room in order to irradiate all surfaces and provide full-room disinfection. It must also be understood that these units are only fully effective for disinfecting hard non-porous surfaces. Porous surfaces, textile weaves, or any other material structures that may shelter microbes from irradiation could protect them from inactivation and reduce the efficacy of disinfection.
Additionally, since any presence of dirt or soil may also shade microbes from the UVC light, rooms must be properly cleaned to remove contaminating dust, soil, or liquids, prior to UVC disinfection.
Lightforce Vs Moonbeam 3 Model Comparison
UVC Lightforce is ideal for broad area surface disinfection and is considerably less expensive to purchase compared to the Moonbeam 3. Both manufacturers have an excellent reputation and their units have proven effective and reliable in service. However, some applications may benefit from the ability for Moonbeam 3 to disinfect in a shorter time period, or for the extra ability to target specific areas of the room for disinfection.
To Talk With An Expert About UVC Room Surface Disinfection, Or To Request A Free UVC Disinfection Appraisal For Your Facility In NY Or PA, Call Dobmeier At 1.800.870.2006 or e-mail
2. Fixed Ceiling Space UV-C Air Disinfection Systems For Occupied Rooms
UV Angel Clean Air
UV Angel Clean Air UVC Disinfection System From Pure Protective Equipment
UV Angel Clean Air from Pure Protective Equipment is a room air disinfection system that can operate 24/7/365 to provide clean air in a fully occupied room. Multiple units can automatically and continuously disinfect the air in your facility without any impact on staff workflow or client/patient activity.
Room air is quietly drawn through a series of fans and filters into a fully enclosed UVC chamber, where it is disinfected using high-intensity UVC light that inactivates all entrained bacteria, viruses, or spores. The clean air is then returned back into the room.
Studies have proven very high effectiveness in treating air to inactivate: Gram-negative pathogens, Gram-positive Pathogens, and Fungal Pathogens.
Because the UVC chamber is designed to operate fully hidden within the structure of the ceiling, floorspace below is totally unaffected, and the UV-C radiation can pose no hazard to room inhabitants.
Testing has proven that this device can attain elimination of airborne pathogens up to 99.99% (LRV=4). Additionally, because a reduction in airborne pathogens leads directly to a reduction in surface-borne pathogens, surfaces also remain cleaner.
MORE INFORMATION On UV Angel Clean Air >>
UV Angel Clean Air Applications
UV Angel Clean Air is ideal for UVC disinfection application in education, healthcare, business offices, hospitality, foodservice, retail, commercial, industrial… facilities.
Dobmeier Is your Premier Distributor OF UVC Disinfection Units From Pure Protective Equipment. To Talk With An Expert About UVC Air Disinfection, Or To Request A Free UVC Disinfection Appraisal For Your Facility In NY Or PA, Call Dobmeier At 1.800.870.2006 or e-mail
3. Mobile Device & Keyboard UV-C Surface Disinfection Systems
Studies have demonstrated that shared work surfaces, such as mobile devices, touchscreens, keyboards, hospital carts… can increase the transmission of pathogens in the workplace. Dobmeier offers 2 UVC disinfection solutions to help solve this issue:
- UV Angel Adapt From Pure Protective Equipment
- SKY 7Xi From Diversey
UV Angel Adapt
UV Angel Adapt UVC Device Disinfection System From Pure Protective Equipment
UV Angel Adapt is an intelligent, automated, UVC disinfection device that safely and continuously detects and neutralizes surface contamination on all kinds of devices, carts... The unit operates 24/7, completing hundreds of disinfection cycles each day, and has proven over 99% effective (LRV=2) against bacteria, viruses and spores. Artificial Intelligence (AI) algorithms detect human activity such as typing or manual cleaning. The unit continuously monitors when surfaces have been used, and the moment a potential threat is detected it automatically and safely treats them with no assistance from staff.
MORE INFORMATION On UV Angel Adapt >>
SKY 7Xi uses high-intensity UV-C radiation at close proximity to thoroughly disinfect iPads, tablet PCs and smartphones up to 1x8x12inches (2.54x20.32x30.5cm) in size. 75W operating power (8W standby mode) provides 360 degree disinfection, but users are fully shielded from the UV-C light during operation.
MORE INFORMATION On SKY 7Xi >>
To Talk With An Expert About UVC Device Disinfection, Or To Request A Free UVC Disinfection Appraisal For Your Facility In NY Or PA, Call Dobmeier At 1.800.870.2006 or e-mail
UVC Disinfection Systems Summary
UVC disinfection systems can help you inactivate harmful pathogens in your facility, significantly reducing labor costs and without the need for hazardous chemicals. Dobmeier distributes UVC disinfection equipment from Diversey and Pure Protective Equipment, offering you a range of models, each designed and engineered for optimum performance under specific conditions and in particular applications. However, some wavelengths of UVC radiation (above ~230nm) have potential to injure, and all systems must be installed, maintained, and operated as instructed by the manufacturer.
FREE UVC Disinfection Evaluation
Get A Free UVC Disinfection System Appraisal In Your Facility
If you are considering a UVC disinfection system purchase, do your research to define the optimum device for your specific application. Decide if you need one or more of the following types of system that are available:
- One or more portable UVC room surface disinfection units
- One or more ceiling-mounted UVC air disinfection units
- One or more UVC mobile device surface disinfection units
If You Have Questions, Or Wish To Speak With An Expert About Your Application, Or To Request A Free UV-C Disinfection Appraisal In Your Facility (In NY or PA), Call Dobmeier At 1.800.870.2006 or e-mail.
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UVC DISINFECTION CATALOG
Room Surface Disinfection Systems
PURE Protective Equipment 62in UVC LIGHTFORCE Mobile Ultra-Violet Disinfection Device SKU#PPE-UVCL-MODELA
PURE Protective Equipment 44.5in UVC LIGHTFORCE Mobile Ultra-Violet Disinfection Device SKU#PPE-UVCL-MODELB
Diversey MoonBeam 3 UVC Disinfection Device SKU#Diversey-MOONBEAM3
Room Air Disinfection Systems
PURE Protective Equipment UV ANGEL CLEAN AIR Ultra-Violet Air Disinfection System SKU#PPE-UV-ANGEL
Mobile Device Disinfection Systems
PURE Protective Equipment UV ANGEL ADAPT Ultra-Violet Surface Disinfection System SKU#PPE-UV-ANGEL-ADAPT
Diversey SKY 7Xi Mobile Device Disinfection Unit SKU#Diversey-SKY-7Xi
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