Which type of household disinfection is the safest?
Household disinfectant types, 1.84 disinfectant, peracetic acid, are mainly used for disinfection of floors, walls, doors and windows in hospitals and other public places. They are highly corrosive and are not suitable. Home use. 2. Dettol and Lysol are more suitable for household use and can kill bacteria. Generally, 3 or 5 drops can be added to the drum of the washing machine. 3. Bleach powder, a liquid prepared with 1% to 3% bleach powder can be used to spray or wipe bathroom toilets. 4. Potassium permanganate is suitable for disinfecting fruits and vegetables, but the soaking time must be more than 5 minutes. How to use household disinfectants: Under normal circumstances, the home only needs to be cleaned and disinfected without disinfection. Disinfection is only necessary when there are patients in the home, especially those with infectious diseases, or after outsiders visit.
Household disinfectants often use 75% alcohol or chlorine-containing disinfectant, mainly 84 disinfectant, because these two disinfectants have an inactivating effect on the new coronavirus that has recently been popular. It has no obvious side effects and is easy to obtain. The new coronavirus is intolerant to 75% alcohol and chlorine-containing disinfectants. When using 75% alcohol for disinfection at home, keep doors and windows ventilated and open, and avoid spraying 75% alcohol directly in the air. Because it is flammable and can easily cause safety hazards and prevent fires, alcohol is often used for local wiping. In addition, care should be taken to avoid dripping when wiping. 84 disinfectant can also be used to wipe or soak local items according to the situation, and the effect is relatively good.
Several misunderstandings when choosing a disinfection cabinet:
1. Xiao Ziming believes that when choosing a disinfection cabinet, you must not be greedy for cheap. Some people think that disinfection cabinets are basically the same and just buy one casually. In fact, this is what most people think, but there is a saying that is good, you must know whether cheap is good. Goods, good goods are not cheap. Xiao Ziming gave a simple example, such as ultraviolet disinfection cabinets. Not all purple lights have anti-virus effects, so when choosing a disinfection cabinet, do not be greedy for cheap. You must know that you get what you pay for, and cheap products are not good. .
2. When choosing a disinfection cabinet, don’t think that the functions of disinfection are all the same. Different items require different types of disinfection cabinets. If you are disinfecting dishes and chopsticks, then you should choose to disinfect the dishes and chopsticks. If you are disinfecting clothes, you should choose some. Disinfection cabinets are specially designed for clothes, but most people choose disinfection cabinets to sterilize tableware and the like, because for sterilizing clothes, many people just put them in the sun to dry.
3. When choosing a disinfection cabinet, don’t just look at the outside, but also pay attention to the practicality of the functions. Xiao Ziming thinks that the quality of the disinfection cabinet is generally as good as the brand. Some disinfection cabinets look good, but their functions are not practical and flashy! Therefore, when choosing a disinfection cabinet, you should try to compare as much as possible. Now that you have decided to buy a disinfection cabinet, you must choose carefully.
As for the misunderstandings in purchasing disinfection cabinets, Xiao Ziming will explain it here today. Friends who want to learn more tips on purchasing disinfection cabinets can go to Xiao Ziming’s blog, which contains many articles about the basic knowledge of disinfection cabinets. explain. Now Xiao Ziming will tell you which type of disinfection cabinet is better to buy.
1. High-temperature disinfection
High-temperature disinfection generally uses a heating temperature greater than 100°C and a duration of more than 15 minutes to denature the protein tissues of microorganisms including bacteria and viruses to achieve the purpose of killing bacteria and viruses. The heating method of high-temperature disinfection cabinets generally uses far-infrared rays. The electric heating element heats the air or generates radiant heat. After the tableware is exposed to high temperature for a period of time, the protein tissue of bacteria, viruses and other microorganisms on the surface will deform and be killed.
2. Ozone disinfection cabinet uses the strong oxidizing property of ozone for disinfection. Ozone is a bluish explosive gas with a special odor at normal temperature. It is one of the strongest oxidants known and a spectrum bactericide. However, ozone leakage will harm human health, and the allowable valve limit in the air at the work site is 0.2mg/m3. Therefore, ozone-type disinfection cabinets need to maintain the concentration of ozone in the cabinet while ensuring that ozone does not leak to ensure the disinfection effect.
3. Oxygen plus ultraviolet tableware disinfection cabinet is a disinfection cabinet that uses ultraviolet light and ozone as a means of disinfection. The ultraviolet lamp used for disinfection and sterilization should be a high-ozone ultraviolet lamp. The wavelength range of ultraviolet light is 200~275nm, and the band with the strongest bactericidal effect is 250~270nm.
When the voltage of the ultraviolet lamp used for disinfection is 220V, the radiated ultraviolet intensity of 253.7nm should not be less than 70 W/cm2. Ultraviolet radiation has low energy and weak penetration, and can only kill microorganisms directly exposed to it. Therefore, the disinfected part must be fully exposed to ultraviolet light during disinfection. The UV lamp also produces ozone, which also sterilizes.
4. Ultraviolet disinfection
Ultraviolet light is a short wave with a wavelength outside the visible range. It is a visible "blue light" produced based on the principle of radiology and has no disinfection effect. Ultraviolet rays can be divided into three bands: A, B, C and vacuum ultraviolet rays according to the wavelength range.
A band 320 ~ 400nm
B band 275 ~ 320nm
C band 200 ~ 275nm
Vacuum ultraviolet 100 ~ 200nm
p>Among them, the real bactericidal effect is C-wave ultraviolet rays, especially ultraviolet rays with a wavelength of 253.7nm. Ultraviolet light can kill various microorganisms, including bacterial propagules, spores, mycobacteria, viruses, fungi, rickettsiae and mycoplasma, etc., with broad spectrum.
The sterilization principle is to irradiate bacteria, viruses and other microorganisms with ultraviolet rays to destroy the structure of DNA (deoxyribonucleic acid) in their bodies, causing them to die immediately or lose their ability to reproduce. DNA has the strongest absorption of ultraviolet light with a wavelength of 253.7nm. The bactericidal effect of ultraviolet rays is related to its irradiation intensity and total irradiation dose. Generally, the killing rate can reach 99%. As the irradiation dose (the product of irradiation intensity and irradiation time) increases, the number of killed bacteria increases, but the percentage of killed bacteria does not increase in proportion to the irradiation dose. Even a relatively small dose can kill a small number of bacteria; if the amount of bacteria is large, even a relatively large dose may still prevent some bacteria from dying.
In short, there are many tips for selecting disinfection cabinets. If you don’t know this aspect and don’t know how to choose a good quality disinfection cabinet, you can go to Xiao Ziming’s blog and take a look. Xiao Ziming’s blog is a professional disinfection cabinet. Cabinet article review blog, which contains a lot of basic knowledge about disinfection cabinet selection and brand evaluation!