Science: How To Use Ultraviolet Disinfection Lamp Correctly?

Writer：Jane Time：2020-06-08 Browse：70

The fight against "epidemic" has become a concerted action of the whole people during the Spring Festival in 2020. After experiencing a "cover" and "Shuanghuanglian" panic buying tide, ultraviolet disinfection lamps and lanterns as a new sterilization tool quickly boarded the hot search.

To this, one may ask, UV disinfection lamp can kill novel coronavirus?

On February 19, China's National Health Commission and China's National Administration of Traditional Chinese Medicine published the COVID-19 Diagnosis and Treatment Protocol (Trial Sixth Edition), which again mentioned that the virus is sensitive to ultraviolet light and heat, and a high temperature of 56℃ lasts for 30 minutes. Ether, 75% ethanol, chlorine-containing disinfectants, peracetic acid, and chloroform are all effective in inactivating the virus. Therefore, ultraviolet disinfection lamp is effective to kill the virus.

Studies have found that ultraviolet radiation is mainly through the microorganism (bacteria, viruses, spore and other pathogens) radiation damage and destroy the function of nucleic acid to microorganism death, so as to achieve the purpose of sterilization. UV disinfection needs to meet certain requirements to achieve effective sterilization, attention should be paid to the wavelength of UV light source, irradiation dose and time.

According to Yan Jianchang, a researcher at the Institute of Semiconductors,According to the wavelength division, ultraviolet band can be divided into UVA, UVB, UVC different bands; UVC is a band with the shortest wavelength and the highest energy. In fact, for sterilization, the truly most effective band is UVC, which is called deep ultraviolet. That is, it must be deep ultraviolet light in the UVC band with a wavelength below 280nm.

Compared with chemical sterilization, the advantage of ultraviolet ray sterilization is high efficiency, inactivation is generally completed within a few seconds, and does not produce other chemical pollutants.

Ultraviolet disinfection lamp is also called ultraviolet sterilization lamp, a sterilization lamp using ultraviolet sterilization effect, disinfection efficiency can reach more than 99%, purify the air, eliminate musty smell. Its application place is wide, such as hospital, school, industry, home and so on... Especially closed space, such as shoe cabinet, wardrobe, cabinet, basement, etc., has a very high practical value.

At present, we need to pay attention to the use of scientific methods when using ultraviolet disinfection lamps for household disinfection.

【 Notes on the use of ultraviolet disinfection lamp 】
1. When using ultraviolet disinfection, people, animals and plants must be evacuated from the scene.
2. Do not look directly at the bright disinfection lamp with naked eyes to avoid eye discomfort.
3. Pay attention to the relationship between ultraviolet intensity and space size. Under normal circumstances, the space of each cubic meter needs 1.5W ultraviolet sterilization lamp, the user can choose the corresponding power size disinfection lamps and lanterns according to the actual situation in the home.
4.the use of ultraviolet disinfection lamp, should keep the environment clean, there can be no dust and water mist in the air, when the indoor temperature is lower than 20 degrees Celsius or the relative humidity is more than 50%, should be extended exposure time. After swabbing the ground, the ultraviolet lamp should be disinfected again after the ground is dry.
5. After disinfection, please remember to open the door and ventilate for 20-30 minutes before entering the room. If you need to use the disinfection lamp with ozone, please continue to close the door and wait for about 30 minutes after the end of use, and then open the door for ventilation for 40 minutes before entering.
6. When not in use, it is necessary to unplug the power supply to prevent unnecessary damage caused by accidentally opening the touch switch.
7. keep the ultraviolet disinfection lamp surface clean, generally try once every two weeks with alcohol cotton ball Sassafras, found on the surface of the lamp with gray layer, oil, should be at any time Sassafras, to ensure the ultraviolet radiation intensity.