FAQ for UV Germicidal Lamp

2021-12-13 13:28:30 LEDHOME 20

1. What is the difference between ozone and non-ozone for UV germicidal lamps?

- Non-ozone (253.7nm)

Advantage: The principle of disinfection and sterilization by pure ultraviolet sunlight irradiation disinfection, only 20 minutes of ventilation can be used to enter the room after use, almost no residue after disinfection.

Disadvantage: There are dead spots that cannot be disinfected, ultraviolet rays cannot reach there, and deep disinfection cannot be penetrated.

Application recommendation: It is recommended to use non-ozone lamps in empty rooms, rooms without dead corners, and rooms with poor ventilation.

- Ozone (185nm)

Advantage: Dual UV + ozone disinfection 360 ° dead space-free disinfection and sterilization. In addition to radiation sterilization, it also supplements sterilization in places where ozone-free deep disinfection is impossible, and it can also eliminate odor. In addition to formaldehyde.

Disadvantage: There will be a strong ozone odor during use, the ventilation time must be extended by more than 40 minutes.

Application recommendation: large house / multi-stack masonry project / dead corner / long-term exposure to sunlight and overlap with mold prone.


2. What is the function of the UV disinfection lamp?

The ultraviolet disinfection lamp can purify the air, eliminate moldy odor, disinfect and sterilize, and remove mites. In addition, it can generate a certain amount of ozone ion.

In public places, UV disinfection can also prevent some bacteria from spreading through the air or passing through objects.


3. Can it kill the coronavirus?

China General Office of the National Health and Health Commission and the Office of the State Administration of Traditional Chinese Medicine respectively released the "Pneumonitis Diagnosis and Treatment Program for New Coronavirus Infection" (Trial Version 5) and "New Coronavirus Infection on February 5, 2020," respectively. The pneumonia diagnosis and treatment plan (the fifth revised version of the trial) recorded the content of "the virus is sensitive to ultraviolet rays"; the public number of the National Electric Light Source Quality Supervision and Inspection Center (Beijing) "National Electric Light Source Center NLTC" was released on February 4, 2020 "Ultraviolet germicidal lamp in the protection of new coronavirus transmission in 2019" records: "The ultraviolet radiation represented by the central wavelength of 253.7nm has a broad-spectrum killing effect on bacteria and viruses, and its effectiveness is obtained on the SARS virus. It was verified by experiments. In theory, based on the nucleic acid destruction effect of ultraviolet radiation, a certain dose of ultraviolet radiation can kill 2019 new coronaviruses. When an ultraviolet germicidal lamp is used in an unmanned condition, its sterilization effect can be achieved by destroying the transmission path. Infectious protection purpose. "At present, our disinfection lamp can kill H3N2 influenza virus, white Pearl bacteria, Escherichia coli, Staphylococcus aureus, Aspergillus niger, large Mucor, Penicillium and orange mites!


4. What’s UVA, UVB, UVC? Is your UV Germicidal lamp UVC?

Yes, our UV germicidal lamp is UVC.

UVA, wavelength 320 ~ 400nm, also known as long-wave black spot effect ultraviolet rays. It has strong penetrating power and can penetrate most transparent glass and plastic. More than 98% of the long-wave ultraviolet rays contained in sunlight can penetrate the ozone layer and clouds to reach the earth's surface. UVA can reach the skin's dermis, destroy elastic fibres and collagen fibres, and tan our skin. UVA with a wavelength of 360nm conforms to the phototaxis response curve of insects, which can be used to make insect traps. UVA with a wavelength of 300-420nm can pass through a special colored glass tube that completely cuts off visible light. It only emits near-UV light centred at 365nm. It can be used for ore identification, stage decoration, banknote detection and other places.

UVB, wavelength 275 ~ 320nm, also known as medium wave erythema effect ultraviolet rays. Medium penetration. Its shorter wavelength will be absorbed by transparent glass. Most of the medium-wave ultraviolet rays contained in sunlight are absorbed by the ozone layer, and only less than 2% can reach the surface of the earth. It will be particularly strong in summer and afternoon. UVB has erythema effect on the human body, can promote mineral metabolism and the formation of vitamin D in the body, but long-term or excessive irradiation will tan the skin and cause redness and peeling. Ultraviolet health care lamps and plant growth lamps are made of special violet-transparent glass (which does not transmit light below 254nm) and phosphors with a peak around 300nm.

UVC, wavelength 100 ~ 275nm, also known as short-wave sterilized ultraviolet. It has the weakest penetrating power and cannot penetrate most transparent glass and plastic. The short-wave ultraviolet rays contained in sunlight are almost completely absorbed by the ozone layer. Short-wave ultraviolet rays are very harmful to the human body. Short-term exposure can burn the skin. Long-term or high-intensity exposure can also cause skin cancer. Ultraviolet germicidal lamps emit short-wave UVC.


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