Three questions about ''ultraviolet disinfection lamp''

Ultraviolet lamp, also called ultraviolet disinfection lamp, as the name implies, is a device that can generate ultraviolet rays, with a wavelength range of 10~400nm.

Ultraviolet rays can be divided into different types according to the length of wavelength, such as UV-A, UV-B, UV-C, etc. The energy level gradually rises, and the UV-C band (100nm~280nm) is generally used for disinfection and sterilization.

The ultraviolet disinfection lamp uses the ultraviolet light emitted by the mercury lamp to realize the sterilization and disinfection function. The ultraviolet disinfection technology has the sterilization efficiency unmatched by other technologies, and the sterilization efficiency can reach 99% to 99.9%. The scientific principle is mainly to act on the DNA of microorganisms, destroy the structure of DNA, and make it lose the function of reproduction and self-replication, so as to achieve the purpose of sterilization and disinfection.

Is the ultraviolet disinfection lamp harmful to the human body?

Ultraviolet ray sterilization has the advantages of being colorless, odorless, and chemical-free, but if there is no protective measure when using it, it will easily cause great harm to the human body.

For example, when exposed skin is irradiated by this type of ultraviolet light, redness, swelling, itching, and desquamation may occur in mild cases, and cancer and skin tumors may even occur in severe cases. At the same time, it is also the "invisible killer" of the eyes, which can cause inflammation of the conjunctiva and cornea, and long-term exposure may cause cataracts. Ultraviolet rays can also damage human skin cells and make the skin aging before it gets old.

In recent extraordinary times, cases of damage caused by improper use of ultraviolet disinfection lamps have occurred more frequently.

Therefore, if you buy an ultraviolet disinfection lamp at home, you must keep in mind when using it:

1. When using ultraviolet disinfection lamps, people, animals and plants must leave the scene;

2. Do not stare at the ultraviolet disinfection lamp for a long time. Ultraviolet rays have certain damage to human skin and mucous membranes. When using ultraviolet disinfection lamps, pay attention to protection. The eyes must not look directly at the ultraviolet light source, otherwise the eyes will be harmed;

3. When disinfecting items with ultraviolet disinfection lamps, spread or hang the items to expand the irradiation surface, the effective distance is one meter, and the irradiation is about 30 minutes;

4. When using ultraviolet disinfection lamps, the environment should be kept clean. There should be no dust and water mist in the air. When the indoor temperature is lower than 20 degrees Celsius or the relative humidity exceeds 50%, the irradiation time should be extended. After scrubbing the floor, wait until the floor is dry before disinfecting with ultraviolet light;

5. After using the ultraviolet disinfection lamp, remember to ventilate for 30 minutes before entering the room.