Before understanding UVC, let's introduce what UV is.

UV, the English name Ultraviolet, refers to ultraviolet rays, which have different wavelengths, and the different wavelengths can be subdivided into UVA, UVB, UVC, UVD and so on.

UVA: Wavelength between 320-400nm, can penetrate the clouds, is the culprit of our tanning.

UVB: Wavelength between 280-320nm, will be absorbed by the ozone layer, causing sunburn.

UVD: Wavelength between 100-200nm, also known as vacuum ultraviolet.

UVC, the protagonist of today's introduction, is the C-band of ultraviolet light, with wavelengths between 200-280nm, also known as short-wave sterilising ultraviolet light, which has the weakest penetrating ability and is unable to penetrate most glass and plastics, and the short-wave ultraviolet light contained in daylight is almost completely absorbed by the ozone layer.

Among all the ultraviolet rays, UVC has the strongest germicidal effect of this kind of short-wave ultraviolet rays, so it is widely used in germicidal technology.

Sterilisation principle

Ultraviolet light is mainly used to sterilise microorganisms (bacteria, viruses, spores and other pathogens) by causing radiation damage and destroying the function of nucleic acid to kill the microorganisms, thus achieving the purpose of sterilisation, in which the wavelength of UVC of 265nm has the best sterilising effect.

I believe that some people for the impression of disinfection lamps still stay in the ‘mercury lamp’ era, UVC LED in the past two years has emerged as the favourite of the application market, the application of the scene has also begun to gradually diversify the direction of the development of UVC LED as a new type of highly efficient, harmless way of disinfection, and the traditional way of elimination of the existence of a huge difference between. UVC LED is a new, efficient and harmless way of sterilisation, and there is a huge difference between UVC LED and traditional disinfection.

The difference between UVC LED and traditional mercury lamp

1. Traditional UVC lamps have been using mercury (mercury) lamps to emit light, and mercury has a very great danger, is carcinogenic, more harmful to the human body, and after the Minamata Convention, mercury lamps have been completely banned, but UVC LED (UVC LED) is a green technology to achieve the effect of sterilisation through UVC lamps, which is a high-tech semiconductor light source that emits UV light.

2.UVC LED has the advantages of higher efficiency, stability, low power consumption, long service life and environmental protection.

3.UVC LED lights, bactericidal efficiency can be as high as 99.9%, on almost all bacteria and viruses can be efficiently killed, and no chemical pollutants, the whole process of sterilisation without the need to add any chemicals, to achieve complete environmental protection.

4. There is no drug resistance: ultraviolet light is the direct destruction of bacterial virus cells in the DNA, RNA, proteins, etc., to the direct death of the cell and can not reproduce and replicate, there is no drug resistance. And other chemicals sterilisation, will make the bacteria and viruses produce drug resistance, and cause the chemical sterilisation effect is ineffective.

UVC LEDs have significant advantages over traditional mercury lamps and are highly reliable.

Instant 100% power UV output without warming up

Highly efficient sterilisation

Contains no harmful substances

Does not produce ozone, which is harmful to the human body

Long life

Not affected by the number of times it is switched on and off

Direct electro-optical conversion

Low energy conversion losses

Low power consumption in standby

How to irradiate the best disinfection effect

In the use of the use of the environment should pay attention to the impact of the sterilisation effect. Usually, the temperature between 27 ℃ to 40 ℃ between the maximum intensity of ultraviolet output, the best bactericidal effect, in addition to ensure that the use of environmental cleanliness and dryness, a large amount of moisture and dust in the environment, will be on the ultraviolet interference and weakening effect, reduce the actual intensity of ultraviolet light. When used at home, try to close the doors and windows, pull the curtains, turn off the lights, to ensure that the room is in darker conditions, more conducive to ultraviolet light to play the role of sterilisation, easy to breed bacteria and other micro-organisms, such as beds, can be unfolded beds, increasing the contact area, more conducive to ultraviolet light sterilisation and disinfection.

Ultraviolet germicidal lamps should be used to ensure sufficient ultraviolet irradiation time. Studies have shown that after 5 minutes of irradiation, for effective sterilisation and disinfection time, when it reaches 30 minutes, it will be able to achieve the daily disinfection effect, when the irradiation time reaches 60 minutes, it will be able to kill most of the bacteria and other microorganisms in the air.