Recently, we have seen many friends are concerned about the news related to UVC sterilization while generating a lot of questions, in response to your current concerns, combined with the current development of UVC sterilization, to give you a simple explanation.

1. UVC sterilization principle

UVC in the end can kill bacteria? This issue is a common concern for everyone. This is confirmed by the relevant authorities at home and abroad, this is possible, UVC deep ultraviolet radiation can release high energy, by destroying the DNA structure of bacteria, the bacteria are directly killed.

UVC sterilization

2. UVC sterilization efficiency

UVC sterilization has been proven feasible, so is it all bacteria can be killed? This is to mention a term, radiation flux, it refers to the unit of time area, the UVC lamp beads released energy, the unit is mW.

Then the UVC germicidal time is equal to the energy required to kill bacteria divided by the radiation flux is equal to the irradiation time.

3. UVC lamp bead distinction

The principle and effect of UVC sterilization have been described in the previous. Here to talk to you about the choice of UVC sterilization equipment.

UVC sterilization is dependent on the UVC lamp beads to achieve. So how to judge the UVC equipment by distinguishing between UVC lamp beads, mainly by the following points.

  • Look at the voltage of the UVC lamp beads: UVC lamp beads on the market in three steps, the first step voltage 5V, the second step voltage 6V, the third ground voltage 7-9V, the lower the voltage, the higher the efficiency of the lamp beads, the less power consumption.
  • Look at the waveband of UVC lamp beads: 253-255nm band sterilization effect is the best, but expensive; 265nm band sterilization effect is the second best, the price is higher than the market; 275nm is the most common on the market, the most used, cost-effective. 280nm or more basically does not have the sterilization effect.
  • Look at the UVC lamp bead packaging process: UVC lamp bead package is divided into fully inorganic and semi-inorganic (organic) packages.

All inorganic packaging as the name implies, is the entire packaging process of the lamp beads are used small molecule materials, such as metal and quartz glass, etc., the chip of the lamp beads is fixed through the eutectic process connected, bracket base is integrated or through metal welding, the surface of the quartz glass is metal sealed and become, you can see the glass window from the surface of the lamp beads below the metal traces. Full inorganic encapsulation has high technical requirements, good sealing, stable product quality, and the service life is generally more than several times that of semi-inorganic encapsulation.

Organic packaging refers to the process of packaging, through the silver glue or other glue to achieve a fixed connection between the chip and the base of the bracket, the glass window is also bonded through the glue, then from the glass window of the lamp bead can be seen from the glue sealing traces. The organic encapsulation process using glue and other organic macromolecule structure material, UVC lamp beads in the process of work release of energy, will produce damage to its structure, resulting in the sealing of the lamp beads and luminous efficiency is reduced, thus reducing the service life of UVC lamp beads. All relatively speaking, UVC lamp beads with a full unclassified package will be more reliable than the semi-unclassified packages.