What is the sterilization principle of the UVC disinfection bag? General disinfection through ultraviolet light？
During the epidemic to meet public demand, all kinds of new disinfection products have come on the market, so that people dazzled. It is reported that the sterilization principle of common home appliance sterilization products on the market include three main types: high-temperature disinfection, ultraviolet disinfection, negative ion/ozone disinfection. These disinfection principles have their own advantages and disadvantages, applicable objects and scenarios are also different.
Bottle sterilizers, radiation sterilization cupboards and other basic high-temperature steam sterilization method, with high temperatures of more than 100 ℃ to inactivate bacteria, is a reliable way to sterilize. However, it must be done in a sealed environment, and it may damage the waterproof layer of the product, and the temperature is too high to easily damage the product or cause scalding accidents.
The common disinfection package on the market is generally sterilized by ultraviolet light. The advantage is the use of UVC band sterilization effect is the best, and does not require an enclosed space, to ensure that the irradiation can be. The disadvantage is the low penetration, stacked objects disinfection effect is poor, and direct irradiation of skin and eye damage, protection is not in place, harm to the human body is not felt, long-term irradiation will lead to plastic aging.
Ozone/negative ion disinfection is the air discharge generated by the electrons captured by oxygen atoms O2, producing negative air ions O3, or ozone. The advantages are obvious, the gas is easy to diffuse, low power consumption, and the generator is small in size. The disadvantages are that the gas tends to leak, injure or even irritate the respiratory tract and cause dizziness. Typical products include air purifiers.
Which products cannot be sterilized by the disinfection package? Sun umbrellas are not recommended to be put into the UVC disinfection bag
According to the disinfection principle of the disinfection kit, what are the points of attention in the selection of materials for disinfection objects? Ye Hanxiang introduced, plastic, silicone sensitive to ultraviolet light, long-term exposure to easy aging, hardening, so this type of material products are not recommended for long-term use disinfection kit, high-temperature disinfection is a better way to disinfect.
“Some UV protection items such as sun umbrellas, UV light is difficult to penetrate, also not suitable for disinfection with UV. There are also stacked up clothes, disinfection of such products need to ensure that the contaminated surface are able to irradiate UV light, stacked fabric in fact, only the surface of the clothes have a good disinfection effect.”
The longer the exposure time within the product, the better the disinfection effect
In the use of maintenance, some disinfection package business web page claims that “removable, washable”. So will washing affect the use of the effect? Ye Hanxiang said, in terms of safety, it is not recommended that the design. Because the disassembled part if not installed, it is easy to cause UV leakage. So the design should pay attention to the fact that the product can not work until it is installed.
What are other considerations for the daily use of disinfection kits? Ye Hanxiang introduced the need to note that all disinfection kits have a disinfection time, do not interrupt the disinfection process before it is completed. “For example, open the disinfection kit during disinfection and add disinfection items so that the whole disinfection process needs to be done again. Within the range of irradiation time set by the product, the disinfection effect is related to the time, the longer the light time the better the effect, but be careful not to expose plastic, silicone and other products to UV light for a long time.”
“The product that meets this requirement, the package itself can be washed after the part with the electrical connection is disassembled. But pay attention to the disinfection package after washing, must be dry before installation and use. The installation must be in place to avoid leaks.”
What else should I pay attention to when using the disinfection kit? Use with a well-ventilated environment
Disinfection kits use ultraviolet light and ozone to kill viruses, which is a physical disinfection method. They are mainly used for disinfection of surfaces, usually not too far away, and the intensity needs to meet the requirements, and people and pets need to stay away when using them to avoid damage to human eyes and skin. At the same time some UV disinfectors will produce ozone, must pay attention to the use of good ventilation environment.
The disinfectants commonly used by the general public are chemically based, using organic solvents to denature proteins and destroy the structure of pathogens directly, or using the strong oxidizing properties of biocides to kill indiscriminately. According to SGS cosmetics and daily chemical products laboratory technical manager Li Jichao, there is also a fogging disinfector on the market, which is the use of ultrasonic atomizer, the disinfectant atomized and sprayed into the disinfection space, the advantage of these products is a large spray range, short operating time, but its only a way to use, the focus should be on what specific disinfectants are used.
“Common active ingredients include chlorine-containing disinfectants, alcohol disinfectants, and quaternary ammonium disinfectants. Some disinfectants, such as peroxide-based disinfectants and chlorine dioxide disinfectants, are not exposed to much in the daily lives of residents because the former undergoes chemical changes in its placement and the latter is inherently dangerous.”