First, choose the category
There are low-pressure mercury lamps on the market, as well as LED household germicidal light and high-pressure xenon lamps. The low-pressure mercury lamp is currently the mainstream product with a life span of 8000 hours. The dominant wavelength is 253.7nm, which has low sterilization efficiency. We use the EIT energy meter to measure the radiation power of most mercury lamps in the market. The power of the low-pressure mercury lamp is very low in microwatts. calculate. However, due to the low light power, the sterilization efficiency is lower, and long-term irradiation is required. It is equivalent to sunlight in summer and has no obvious effect on sterilization. And the mercury lamp will produce a lot of ozone and pollute the environment. It is a good choice for seeking psychological comfort.

 
Best LED household germicidal light has a long lifespan, and the current sterilization efficiency is relatively high. It can reach 99.99% sterilization rate in 3 minutes, high power; the wavelength is between 265nm and 280nm, and you can choose to purchase if conditions permit.

 
Second, choose materials
In the market, most of the two types of quartz tube and high boron glass are used.
Best LED household germicidal light:
1. The material with the highest ultraviolet transmittance can transmit more than 90% of 253.7nm ultraviolet rays;
2. The ultraviolet intensity is large, the life is long, the light decay is small, the sterilization effect is good, and the lamp life is generally greater than 8000 hours.
Best LED household germicidal light:
1. High boron glass can only transmit about 50% of 253.7nm ultraviolet light;
2. The intensity of ultraviolet radiation is small and the life span is short. Several established international companies are doing well, such as Philips/OSRAM.

Third, choose whether to contain ozone
Best LED household germicidal light, divided into ozone and ozone-free.
Need to make a choice for specific use scenarios. Such as disinfection box or warehouse goods disinfection, need to use ozone. Doped with quartz glass, used for ozone-free ultraviolet lamps;
Natural quartz glass is used for ozone ultraviolet lamps; synthetic quartz glass is more expensive and is used for Best LED household germicidal light with higher requirements. General household use.

Fourth, choose power
Best LED household germicidal light disinfection in a large space is 1W per square meter, and 1.5W per cubic meter for high-demand ones, that is, taking 3 meters as an example, 4.5 watts per square meter is required.