Ultraviolet sterilization

Ultraviolet sterilization refers to a method of killing and killing microorganisms through ultraviolet radiation. Ultraviolet rays can not only denature nucleic acid proteins, but also generate trace ozone from oxygen in the air, thereby achieving a common sterilization effect. The wavelength used for ultraviolet sterilization is generally 200~300nm, and the strongest in sterilization is 254nm. It is a method of surface sterilization, suitable for the sterilization of irradiated surfaces, sterile room air and distilled water; It is suitable for the sterilization of liquid medicine and the deep sterilization of solid materials.
The ultraviolet disinfection lamp is a kind of disinfection device that uses a quartz glass tube as the main material to achieve the ultraviolet radiation intensity that can kill germs through scientific means, and uses indirect or direct irradiation to kill germs. 2. The ultraviolet light of the ultraviolet disinfection lamp used for disinfection is C-wave ultraviolet, and its wavelength range is 200-275nm, and the strongest wave band of sterilization is 250-270nm. International standards have a corresponding irradiance value for the ultraviolet light source for disinfection. Requirements. 3. Ultraviolet disinfection lamps are generally matched with reflectors made of materials with high ultraviolet reflectance. This is strongly recommended for better results. UVC meter is used to test the uv intensity of the uvc disinfection lamp.
4. When the voltage of the ultraviolet lamp used for disinfection is 220V, the relative humidity of the environment is 60%, and the temperature is 20 ℃, the intensity of the radiated 253.7nm ultraviolet light shall not be less than 70 μW/cm 2. For the safety of students in schools, the classroom voltage is 220V. 5. The irradiance intensity of the ultraviolet lamp gradually decreases during use, so the intensity of disinfection ultraviolet light should be measured frequently, and once it drops below the required intensity, it should be replaced in time. Because we are in the school, there is no test, but regular replacement according to the manual. Therefore, there are corresponding instructions in the instructions, and there is no mistake when you follow the instructions. Third, the scope of application of ultraviolet lamps 1. Ultraviolet rays can kill various microorganisms, including bacterial propagules, spores, mycobacteria, viruses, fungi, rickettsiae and mycoplasma, etc. Any surface contaminated by the above microorganisms, water and The air can be disinfected by ultraviolet rays. 2. Ultraviolet radiation has low energy and weak penetrating power, and can only kill the directly irradiated microorganisms. Therefore, the disinfected parts must be fully exposed to ultraviolet rays during disinfection. 3. When using ultraviolet rays to disinfect rough surfaces such as paper and fabrics, the irradiation time should be extended appropriately, and both sides should be irradiated.