Gasification of hydrogen peroxide under the action of RF to produce plasma, through the low-temperature ionization of the active Free-radical effect, so that microbial extinction. When the RF wave stops, the ionized state ends and transforms into stable oxygen molecules and water molecules, followed by the repetition of the liquid injection diffusion stage and the plasma stage to ensure the sterilization effect of the instruments.
Low-temperature plasma sterilization mechanism
So far people have not been able to give a more satisfactory answer. According to early experiments, there have been various hypotheses about the mechanism. Throughout the various hypotheses, whether from the physical or chemical aspects of the sterilization mechanism to explore, in the final analysis is no more than the following three: the plasma formation process produces a large number of ultraviolet rays directly destroys the microbial genetic material; ultraviolet photons inherent photolysis to break the chemical bonds of microbial molecules, and finally generate volatile compounds such as CO, CHx; through the plasma etching, that is, the active substances in the plasma with the microorganisms in the plasma. chemical reaction between the active substances in the plasma and the electrophiles and nucleic acids in the microorganisms, it is able to destroy the microorganisms and disrupt their survival functions. Studies have shown that in a single gas, the killing effect of the gas on bacterial spores is not the same, according to the bactericidal effect in order of strength for O 2 CO2 H 2, Ar and N 2; and the use of mixed gases to stimulate the plasma, and its bactericidal disinfection effect tends to be better than a single neutral gas.