Ultraviolet (UV) has been used in the industrial and health fields for many years. A new generation of LEDs now seems to be challenging traditional UV fluorescent sources.
â–¶ What is the wavelength range of the UVC LED?
UVC LED wavelengths are typically defined as 200 nm to 280 nm.
▶ What is the “sterilization range†of UV rays?
According to the International Ultraviolet Association, "The ultraviolet spectrum ('bactericidal' region), which is very important for water and air disinfection, is the range that is absorbed by DNA (RNA in some viruses). This sterilization range is about 200-300 nm."
The bactericidal range is known to extend above 280 nm and is now generally considered to extend to 300 nm, however this may also change with more research. Scientists have shown that ultraviolet light with wavelengths between 280 nm and 300 nm can be used for sterilization and sterilization.
â–¶ What is the best wavelength for disinfection?
There is a misunderstanding that 254 nm is the best wavelength for sterilization because the peak wavelength of the low pressure mercury lamp (determined only by the physics of the lamp) is 253.7 nm. The wavelength of 265 nm is generally considered to be optimal because this wavelength is the peak of the DNA absorption curve. However, a range of wavelengths have a disinfecting and sterilizing effect.
â–¶ UV mercury lamps have been considered the best choice for sterilization and sterilization. Why is this?
Historically, mercury lamps have been the only choice for sterilization and sterilization. With the advancement of UV LED technology, there are new options because LEDs are smaller, more powerful, non-toxic, longer lasting, more energy efficient, and allow more switching times. This makes the solution smaller, battery-powered, more portable, and capable of instant all-optical output.
â–¶ What is the difference in wavelength characteristics between UVC LEDs and mercury lamps?
The low pressure mercury lamp emits nearly monochromatic light with a wavelength of 253.7 nm. Low pressure mercury lamps (fluorescent tubes) and high pressure mercury lamps are also used for sterilization and sterilization. These lamps have a broader spectral distribution, including wavelengths for sterilization. UVC LEDs can be concentrated at a narrow, specific wavelength, which allows the solution to be tailored to specific application needs.
â–¶ Does the peak absorption wavelength of DNA vary from bacteria to bacteria?
Yes. Different types of peak absorption wavelengths are indeed different, but most of them are around 265 nm.
â–¶ Can a single wavelength destroy all bacteria?
Yes, a single wavelength can be used. However, bacteria have different optimal absorption wavelengths.
â–¶ How is the sterilization effect determined?
Power intensity, wavelength, and duration of illumination are typically used to determine the bactericidal effect. For example, in water, there may be multiple bacteria with different optimal absorption wavelengths. For any given wavelength of germicidal UV, the power and time of the illumination needs to be calculated to achieve the desired level of disinfection.
Disposable Electronic Atomizer
Disposable Electronic Atomizer,Disposable Atomizer Electronic Cigarette,Disposable Electronic Atomizer Adapter,Disposable Electronic Atomizer Pen
Lensen Electronics Co., Ltd , https://www.lensenvape.com