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Flat local shipping fee of $5, or spend $200 and above for FREE local delivery!

What is the Difference between UVC and Multi-spectral Blue Light?

Wavelength

Gold-standard UVC

254nm

Far UV

222nm

Multi-spectral Blue Light

Varies, typically includes blue light around 405-480nm

Proven Efficacy

Gold-standard UVC

Proven efficacy against a wide range of pathogens, including multi-drug resistant bacteria, viruses, fungi, and spores1-5

Far UV

Promising results in inactivating pathogens over time, but fewer efficacy studies compared to UVC 254nm

Multi-spectral Blue Light

Effectiveness varies; generally proven for certain applications such as skin infections

Efficacy Time in Healthcare Settings

Gold-standard UVC

For high-output UVC lamps, typically requires a 5-15 minutes of exposure to kill up to 99.99% of germs and pathogens in healthcare settings

Far UV

Efficacy time being studied; preliminary data suggests much longer exposure times required than UVC 254nm

Multi-spectral Blue Light

Varies based on the specific application; may require longer exposure times and very close exposure distances

Safety Concerns

Gold-standard UVC

Requires a vacant space for rapid disinfection. Risk controls such as human presence sensors should be implemented to avoid exposure

Far UV

Reportedly safe for human exposure, but limited studies for long-term exposure

Multi-spectral Blue Light

Generally considered safe for skin, but potential concerns about long-term effects exist

Long-Term Use Studies

Gold-standard UVC

Extensive studies supporting long-term use for disinfection in various settings. Ozone-free UVC lamps are recommended for immediate occupancy after disinfection

Far UV

Limited long-term studies available; ongoing research to ensure safety over extended periods

Research conducted by A*STAR showed possible DNA damage to cells6

Multi-spectral Blue Light

Limited long-term studies, more research needed to establish safety over prolonged use

Applications

Gold-standard UVC

Widely used for surface and air disinfection in healthcare, water treatment, and food processing

Far UV

Applied in areas with generally healthy individuals such as offices and waiting rooms.

Not adopted for standard disinfection of confirmed contaminated spaces

Multi-spectral Blue Light

Limited applications; commonly used in treatment of gonococcal infections, eye infections, and otitis media, and in the decontamination of stored platelets and plasma

Material Compatibility

Gold-standard UVC

Generally compatible with a wide range of materials, with some exceptions. Due to fast disinfection speeds, length of exposure required is shorter

Far UV

Can cause degradation in certain materials; requires careful consideration in design

Multi-spectral Blue Light

Safe for most materials, but potential impact on sensitive materials needs consideration

Regulatory Approval

Gold-standard UVC

Well-established regulatory approvals for various applications. Risk assessment and controls well established by NEA

Far UV

Limited regulatory approvals; ongoing evaluation by health authorities

Multi-spectral Blue Light

Generally recognized as safe, but specific approvals may vary by application

Cost of Implementation

Gold-standard UVC

Moderate initial costs but proven cost-effective over time

Far UV

Higher initial costs due to specialized equipment; ongoing costs being evaluated

Multi-spectral Blue Light

Varies depending on the application; may require specialized equipment

Accessibility of Technology

Gold-standard UVC

Widely available and established technology

Far UV

Limited availability due to patented technology

Multi-spectral Blue Light

Accessible for various applications, but specialized equipment may be required

Conclusion

Gold-standard UVC

Proven and widely adopted for healthcare-grade disinfection; well-researched and established

Far UV

Promising but less established; ongoing research needed for broader adoption

Multi-spectral Blue Light

Effective for specific applications, but further research is crucial for broader acceptance

Characteristics

Gold-standard UVC

Far UV

Multi-spectral Blue Light

Wavelength

254nm

222nm

Varies, typically includes blue light around 405-480nm

Proven Efficacy

Proven efficacy against a wide range of pathogens, including multi-drug resistant bacteria, viruses, fungi, and spores1-5

Promising results in inactivating pathogens over time, but fewer efficacy studies compared to UVC 254nm

Effectiveness varies; generally proven for certain applications such as skin infections

Efficacy Time in Healthcare Settings

For high-output UVC lamps, typically requires a 5-15 minutes of exposure to kill up to 99.99% of germs and pathogens in healthcare settings

Efficacy time being studied; preliminary data suggests much longer exposure times required than UVC 254nm

Varies based on the specific application; may require longer exposure times and very close exposure distances

Safety Concerns

Requires a vacant space for rapid disinfection. Risk controls such as human presence sensors should be implemented to avoid exposure

Reportedly safe for human exposure, but limited studies for long-term exposure

Generally considered safe for skin, but potential concerns about long-term effects exist

Long-Term Use Studies

Extensive studies supporting long-term use for disinfection in various settings. Ozone-free UVC lamps are recommended for immediate occupancy after disinfection

Limited long-term studies available; ongoing research to ensure safety over extended periods

Research conducted by A*STAR showed possible DNA damage to cells6

Limited long-term studies, more research needed to establish safety over prolonged use

Applications

Widely used for surface and air disinfection in healthcare, water treatment, and food processing

Applied in areas with generally healthy individuals such as offices and waiting rooms.

Not adopted for standard disinfection of confirmed contaminated spaces

Limited applications; commonly used in treatment of gonococcal infections, eye infections, and otitis media, and in the decontamination of stored platelets and plasma

Material Compatibility

Generally compatible with a wide range of materials, with some exceptions. Due to fast disinfection speeds, length of exposure required is shorter

Can cause degradation in certain materials; requires careful consideration in design

Safe for most materials, but potential impact on sensitive materials needs consideration

Regulatory Approval

Well-established regulatory approvals for various applications. Risk assessment and controls well established by NEA

Limited regulatory approvals; ongoing evaluation by health authorities

Generally recognized as safe, but specific approvals may vary by application

Cost of Implementation

Moderate initial costs but proven cost-effective over time

Higher initial costs due to specialized equipment; ongoing costs being evaluated

Varies depending on the application; may require specialized equipment

Accessibility of Technology

Widely available and established technology

Limited availability due to patented technology

Accessible for various applications, but specialized equipment may be required

Conclusion

Gold-standard UVC:
Proven and widely adopted for healthcare-grade disinfection; well-researched and established

Far UV:
Promising but less established; ongoing research needed for broader adoption

Multi-spectral Blue Light:
Effective for specific applications, but further research is crucial for broader acceptance

Comparison table between 254nm UVC vs. 222nm Far UV vs. Multi-spectral Blue Light

Because the 254nm UVC is proven to be effective, we at EO Medical choose to use them in Singapore. The 254nm UVC lamps we import from USA are also 100% ozone-free and shatter-proof for added safety.

Examples of Custom UVC Projects Installed by EO Medical in Singapore Healthcare Settings:

1. Custom UVC Disinfection of Procedure Area in Clinic: “SpiroBooth”

Spirobooth_1
Spirobooth_2

UVC disinfection system of SpiroBooth (image source: EO Medical)

Spirobooth_3

UVC disinfection system of SpiroBooth (image source: Thomas, 2021. Pediatric Pulmonology7)

2. Retrofitting an Ambulance Used to Transport COVID-19 Patients

Ambulance UVC disinfection system installed by EO Medical (image source: EO Medical)

3. Shared Ward Toilet

Toilet UVC disinfection system installed by EO Medical (image source: EO Medical)

EO Medical is happy to collaborate with you and support you for your UVC needs.

Contact us now for a free on-site consultation.

References
  1. de Groot T, Chowdhary A, Meis JF, Voss A. Killing of Candida auris by UV-C: Importance of exposure time and distance. Mycoses. 2019 May;62(5):408-412. doi: 10.1111/myc.12903. Epub 2019 Mar 12. PMID: 30748018; PMCID: PMC6850319
  2. Pegues, D.A.; Han, J.; Gilmar, C.; Mcdonnell, B.; Gaynes, S. Impact of Ultraviolet Germicidal Irradiation for No-Touch Terminal Room Disinfection on Clostridium Difficile Infection Incidence Among Hematology Oncology Patients. Infect. Control Hosp. Epidemiol.10, 2016
  3. Rutala, W.A.; Gergen, M.F.; Tande, B.M.; Weber, D.J. Room Decontamination Using an Ultraviolet-C Device with Short Ultraviolet Exposure Time. Infect. Control Hosp. Epidemiol. 2014, 35, 1070 -1072.
  4. Kanamori H, Rutala WA, Gergen MF, Weber DJ. Patient Room Decontamination against Carbapenem-Resistant Enterobacteriaceae and Methicillin-Resistant Staphylococcus aureus Using a Fixed Cycle-Time Ultraviolet-C Device and Two Different Radiation Designs. Infect Control Hosp Epidemiol. 2016 Aug;37(8):994-996. doi: 10.1017/ice.2016.80. Epub 2016 Apr 13. PMID: 27072280.
  5. Lowman W, Etheredge HR, Gaylard P, Fabian J. The novel application and effect of an ultraviolet light decontamination strategy on the healthcare acquisition of carbapenem-resistant Enterobacterales in a hospital setting. J Hosp Infect. 2022 Mar;121:57-64. doi: 10.1016/j.jhin.2021.12.008. Epub 2021 Dec 13. PMID: 34915050.
  6. Ong Q, Wee W, Dela Cruz J, Teo JWR, Han W. 222-Nanometer Far-UVC Exposure Results in DNA Damage and Transcriptional Changes to Mammalian Cells. Int J Mol Sci. 2022 Aug 14;23(16):9112. doi: 10.3390/ijms23169112. PMID: 36012379; PMCID: PMC9408858.
  7. Thomas B, Teo JC, Teo JY, et al. SpiroBooth-innovation to mitigate COVID-19 risk in the lung function laboratory. Pediatric Pulmonology. 2021 Oct;56(10):3438-3440. DOI: 10.1002/ppul.25580. PMID: 34293256; PMCID: PMC8441934.

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