German
French
Italian
Portuguese
Japanese
Korrean
Russian
Definition and principle of VHP pass box
Definition and principle of VHP pass boxVHP pass box is advanced sterilization equipment that uses the unique characteristics of hydrogen peroxide plasma in a normal-temperature gas state to achieve efficient sterilization.Hydrogen peroxide in a normal-temperature gas state is more capable of killing spores than in liquid and vapor states. The principle is to generate free H2O2+ and H2O2- ions, which can attack cell components, including lipids, proteins, and DNA tissues, and destroy bond connections, thereby achieving the purpose of sterilization. VHP pass box uses a special sterilization medium delivery system to make the hydrogen peroxide plasma more evenly distributed, ensuring the consistency and reliability of the sterilization effect. For example, according to relevant information, the killing rate of the VHP pass box can reach 6 logs for thermophilic fat spores. This powerful sterilization ability enables it to be widely used in fields with extremely high sterilization requirements, such as the pharmaceutical industry and biological laboratories. The working process of the VHP pass box is divided into multiple stages. The first is the preparation stage, in which the hydrogen peroxide generator is preheated. Next is the vaporization stage. After hydrogen peroxide drips onto the evaporator, it quickly vaporizes into steam and is sprayed into the sterilization space until it reaches saturation. At this time, the hydrogen peroxide vapor will become slightly condensed, killing microorganisms. Then comes the maintenance stage, during which hydrogen peroxide vapor is continuously sprayed into the space to maintain the saturation state, achieving continuous coverage of the sterilization surface and constant killing of microorganisms. Finally, there is the ventilation degradation stage, during which the hydrogen peroxide concentration is reduced to a safe concentration through the lyase. After the residual H2O2 concentration is detected to be less than 1PPM, the sterilization process is completed. |
