November 16, 2020

Precautions for using ultraviolet disinfection lamps

Doing a good job of disinfection in our daily life can ensure our health. In the past, people often used chemical methods for disinfection. In recent years, more and more people use ultraviolet disinfection lamps for disinfection. The ultraviolet disinfection lamp has the advantages of convenient use, environmental protection, time saving and good disinfection effect. Of course, when using ultraviolet disinfection lamps for disinfection, we must master the scientific method of use. So, what are the precautions for using ultraviolet disinfection lamps?

Precautions for using ultraviolet disinfection lamps
Ensure that no one is disinfected: when using ultraviolet light to irradiate the virus, no one should be present to avoid injury caused by direct ultraviolet radiation on the eyes and skin. If you need to work under ultraviolet light, you should strengthen personal protection and wear

protective glasses.

Pay attention to the ultraviolet intensity of the ultraviolet disinfection lamp: ultraviolet rays are invisible to the naked eye. The blue light radiated by the lamp does not represent the ultraviolet intensity. The radiant illuminance value of the lamp should be checked regularly. The ultraviolet illuminator within the validity period or a special ultraviolet intensity can be measured To determine whether the UV lamp has reached the expiration date. If the irradiation intensity is lower than 70μW/cm2, it should be replaced in time.

During use, the surface of the UV lamp should be kept clean: wipe it with alcohol gauze once a week on Monday and Thursday. When dust or oil is found on the surface of the lamp, it should be wiped at any time.

Pay attention to the correct method of disinfection: When using ultraviolet rays to disinfect the surface of the article, the irradiated surface should be directly irradiated by ultraviolet rays, and a sufficient radiation dose should be achieved. The suitable temperature range for ultraviolet disinfection is 20℃-40℃. Too high or too low temperature will affect the disinfection effect. The disinfection time can be extended appropriately, and the irradiation time can be extended appropriately when the relative humidity is greater than 80%.

What is the scope of use of ultraviolet disinfection lamps
Ultraviolet disinfection lamps have a wide range of use. Ultraviolet rays can kill various microorganisms, including bacterial propagules, spores, mycobacteria, viruses, fungi, rickettsiae and mycoplasma, etc. The wavelength of 253.7nm can play a good role in sterilization The effect: the energy of ultraviolet photons is absorbed by the base pairs in DNA, causing genetic material to mutate, causing bacteria to die immediately or unable to reproduce offspring, achieving the purpose of sterilization. All surfaces contaminated by the above microorganisms, water and air can be disinfected with ultraviolet rays.

Disinfection of the air: It can purify the air and eliminate the musty smell. In addition, it can produce a certain amount of negative oxygen ions. The room that has been disinfected by ultraviolet rays will have a particularly fresh air. At the same time, it can prevent germs from spreading through the air or through the surface of objects, especially in hospitals, kindergartens and other places, showing extremely high practical value. When using ultraviolet rays to kill microorganisms protected by organic matter, the radiation dose should be increased. Suspended particles in the air and water can also affect the disinfection effect.

Disinfection of water bodies: internal or external water irradiation can be used. When using internal water irradiation, the UV light source should be equipped with a quartz glass protective cover. No matter what method is adopted, the thickness of the water layer should be less than 2cm. According to the UV light source The intensity determines the water flow speed. After disinfection, the water must meet national standards.

Sterilization, Sterilization knowledge
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