UVC Lamps Provide Surface Sterilization
Some bacteria and viruses may survive for days on nonporous surfaces, which is how infectious illnesses are propagated. It has been demonstrated that UV light may effectively sterilise surfaces, killing even drug-resistant superbugs and new coronaviruses.
UVC Lamps Can Sterilise Surfaces
Depending on the surface, the temperature and humidity of the environment, and the amount of virus deposited on the surface, cold and flu viruses can remain contagious on surfaces for several hours or even days. The SARS-CoV-2 virus that causes COVID-19 respiratory sickness is predicted to survive on surfaces for anywhere between 6 hours and 9 days, according to the Technical Report 2020 COVID-19 Coronavirus Ultraviolet Susceptibility. In contrast to softer materials like textiles, such as stainless steel, plastic, or other equally hard, nonporous surfaces, viruses tend to survive longer on these surfaces.
It is also known as ultraviolet germicidal irradiation (UVGI), and it is a disinfection technique that has been shown to be extremely successful when used in conjunction with proper UV lamp dosage. In contrast to conventional fluorescent lights, germicidal lamps for disinfection are developed to emit wavelengths in the UVC range.
Since ultraviolet light has a shorter wavelength than visible light and a higher frequency than visible light, it is not visible to the human eye. There are three main types of UV light: UVA (315-400 nm), UVB (280-315 nm), and UVC (100-280 nm). UVC has the best sterilising and germicidal characteristics, and its wavelength varies from 10 nm (vacuum and severe UV) to 400 nm.
UVC Surface Sterilization's Numerous Applications
Since the middle of the 20th century, UVGI has been widely utilised as a recognised disinfection technique, mostly for medical sterilisation purposes. Numerous UV water treatment facilities exist in Europe and North America. UV disinfection has also played a significant role in water sterilisation applications used in drinking and wastewater treatment facilities globally. It would be impossible to identify all the sectors and applications where UVC lamps can be used for surface sterilisation.
The following are some of the most popular and simple applications of UV radiation for surface sterilisation:
Hospitals, healthcare facilities, and medical services
It has always been crucial to stop the spread of illness in hospitals and other healthcare settings. It has been demonstrated that adhering to a stringent disinfection strategy that calls for the use of UV light for hospital disinfection offers significantly more protection and can eradicate up to 99.99% of viruses and bacteria. Wall-mounted, portable, UVC robots, UVC HVAC air sterilisation systems, and other UVC lamps are used in hospital sterilisation equipment.
Nearly every section of a hospital can benefit from UV surface sterilisation, including:
1. Aid facilities
2. Hospital wards
3. Hospital ERs
4. Holding areas
5. Hallways 6. Toilets
7. Eateries
8. Medical technology
Preparing food and beverages
Food irradiation, or the application of UVC radiation to food products, has several advantages for a variety of food groups, including meats, fish, poultry, fruits, vegetables, liquid storage tanks, and more. By eradicating viruses and bacteria, such as E. coli and salmonella, in food preparation, handling, and storage areas, UV surface sterilisation offers further advantages.
Additionally useful in grocery shops, butcher counters, and frozen food areas, UVC germicidal lights may stop the growth of mould and mildew in wet, moist freezers.
Restaurants
Restaurants that use UV disinfection equipment may keep their environments significantly cleaner and free of dangerous infections. In order to prevent the transmission of illness and to maintain compliance with health code requirements, UV lights are used in commercial kitchens and eating rooms. A commercial kitchen hood exhaust's UV lights help decrease grease accumulation, lowering the danger of fire and maintaining cleaner kitchen equipment.
Schools Because they are gregarious by nature and can be less prone to practise basic hand hygiene, children of all ages can be super-spreaders of viruses. To assist stop the spread of disease in schools, UVC sterilisation lights can be put in the classrooms, cafeterias, and halls.
Laboratories
All lab surfaces and apparatus must be kept sterile in clean rooms, research labs, and university labs. This is important in many kinds of labs, including those used for biotech and bioengineering research, pharmaceutical manufacturing, and medical testing.
Laboratories may contribute to the upkeep of a clean environment by utilising UV light sterilisation to clean surfaces and equipment including instruments, safety goggles, and other devices.
Using Public Transit
As a result of the close quarters of passengers on buses, trains, and aeroplanes, the transmission of pathogenic germs in transit vehicles is substantial. The same surfaces are touched by several passengers as they pass through a tube station. Airborne germs are transferred by germs that circulate in automobile air conditioning ventilation systems. With different surface sterilisation technologies, such as UVC lamps installed on buses or UVC robots wandering an airport, UV lights are enhancing public safety.
Proof of the Efficiency of UV Surface Sterilisation
By damaging the nucleic acids and altering the DNA of hazardous bacteria on surfaces, short-wave UVC radiation kills or inactivates them, rendering the cells harmless. Similar to SARS and MERS, which are both very vulnerable to UV inactivation, the SARS-CoV-2 virus that causes COVID-19 is a novel variation in the betacoronavirus family. According to the 2020 COVID-19 Coronavirus Ultraviolet Susceptibility technical report, a D90 value is the amount of UV dose necessary for 90% inactivation. All coronaviruses are effectively eliminated at 90% within the D90 dosage range of 7 to 2410 J/m2, with a mean of 47 J/m2, excluding outliers of airborne studies. According to two investigations, SARS-CoV-2 is vulnerable to UV radiation at an average dose of 27 J/m2.
In order to proliferate, viruses need a host and can be either naked or enclosed DNA molecules. Antibiotics cannot cure viruses; instead, a vaccination is needed. Because bacteria have no cell walls and can proliferate and live on their own, they are self-contained and distinct from viruses. In addition, UV radiation is very efficient in killing superbugs and germs that are resistant to antibiotics, including:
1. Staphylococcus aureus (MRSA), a drug-resistant bacteria.
2. Escherichia coli (E. coli) that produces ESBL
3. VRE, or Enterococcus faecium, is resistant to vancomycin.
4. Clostridium difficile
5. Polymethoxylated pseudomonas
6. Klebsiella pneumoniae Carbapenemase-Resistant (KPC)
These and several more viruses and bacteria may be effectively eradicated by UVC radiation in applications for surface, water, and air sterilisation.
UV surface sterilisation advantages
Sterilising surfaces with UV light has several advantages in addition to having a very high kill rate for germs and viruses. The addition of UV light disinfection to your cleaning routine can ensure a higher level of protection against disease without the use of additional chemicals, even though surfaces should still be cleaned manually to ensure a clean surface free of organic compounds prior to UV exposure.
In order to avoid pest infestations and foodborne diseases, UV radiation on food eliminates the need to expose food to pesticides. UV sterilisation operates continuously without the need for extra labour or upkeep, making it very cost-effective. When employing top-notch UVC germicidal lights, surface sterilisation is both highly effective and reasonably priced.
In order to perform in almost any sterilisation application involving surfaces, air, or water, LightSources provides a large variety of germicidal UVC lamps, including:
1. Mercury lights used for germicidal purposes.
2. Typical output
3. A lot of production
4. Concise
5. Uniqueness
6. Mercury-based germicidal lights
7. The spot-and-pellet method
8. lights with medium pressure that kill germs
9. Ozone lights
10. Ballasts that are electronic
11. Components of lamps
