This paper introduces the traditional disinfection and sterilization methods and their advantages and disadvantages. Who can help me add it?

380nm ultraviolet light means that the wavelength of sunlight is 200nm. 380nm, including three categories: UV-A wavelength 3 15nm wavelength 280nm? 3 15 nm UV-B, UV-C wavelength 200 nm to 280 nm. Ultraviolet rays (290nm and 2000nm) reaching the earth's surface account for about 13%, of which 97% are UV-A and UV-B, and 3% are UV-C, which is close to zero. Human skin is damaged by UV-A, UV-B. UV-C ultraviolet rays made by special technology can be used for disinfection and sterilization.

So if you are used for disinfection, you should choose UV-C radiation, that is, the commonly used UV-C, UV-C ultraviolet lamp, a light bulb or lamp, gas discharge lamp, whether the general germicidal lamp is a lamp or not, fluorescent lamp and household lighting projects are basically the same, of course, made of glass. Glass is a transparent germicidal lamp (timely or high boron material). The money detector uses the black glass of UV-A lamp. Fluorescent anti-counterfeiting (RMB) of fluorescent materials used for excitation cannot be used for sterilization. UV-B lamps are usually used in medical treatment, such as phototherapy for psoriasis, vitiligo, psoriasis and hyperbilirubinemia.

How to choose germicidal lamp;

In the market, glass materials can be divided into: high boron materials and timely high boron lamps, which can not be compared with quartz tubes in strength or life, but of course, the price is lower than quartz tubes. simple

Solution:

1 The weight difference of lamps with the same shape is that the timely density is heavier than that of high boron.

2。 The hardness of seasonable materials is more difficult to scratch than ordinary fruit knives.

3。 Looking at the lamp, if it is a metal sealing material, it is generally not quartz lamp (of course, it only means that under normal circumstances, quartz bulb factory can provide sealed metal heads, but from the market point of view, it is not). At the end of the quartz tube, the sealing material is bakelite or ceramics.

4。 The life span of users of germicidal lamps can not be detected. The quality of domestic lamps is uneven, more than 8000 hours, but the difference may be hundreds of hours, and there is no ultraviolet light.

At present, the leader in this industry should be the low-voltage ultraviolet germicidal lamp produced by Hershey in Germany. Its service life is 9000 hours-16000 hours, and its attenuation to UV-C is less than 20%. In addition, it is often used for better Philips production in China, with an average life of 8,000 hours and high-intensity UV-C output.

Note: the germicidal efficacy of germicidal lamps is invisible to the naked eye. Some lamps are on, but the ultraviolet intensity may be greatly reduced because of internal mercury consumption. Although it is also on, there is no output. Ultraviolet detection is an ultraviolet lamp that needs the help of professionals, and using UV-C illuminance meter is a good choice.