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3M brand medical masks are not suitable for protection against decoration pollution, medical masks can mainly prevent virus germs and dust particles, and are used more by medical staff. The formaldehyde concentration is relatively high after house decoration, so it is more appropriate to wear a virus-proof and dustproof mask that can prevent harmful gases.
Formaldehyde is an organic gas, and 8247 masks can be used, which can prevent organic gas particles and remove odors more appropriately than medical masks. If the formaldehyde concentration is high, it is recommended to move in after 3-6 months. When the house is decorated with paint, the effect of the gas mask is much worse than that of the gas surface.
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It is not recommended to use medical masks, about house decoration, the main hazards are organic vapor and formaldehyde, etc., 3M's recommended solution for protection is 6200 6500 7502 half mask + 6005cn 6006cn poison filter box for protection. If you also need the function of dust prevention, you can add 5N11CN filter cotton + 501 filter cotton cover for comprehensive protection. All of the above filter pads and poison filter cartridges are in a pack of two pieces, please use them at the same time after unpacking.
A full-face respirator can be used if needed. Generally speaking, if you feel discomfort in your eyes and face at work, opening windows for ventilation can effectively relieve symptoms.
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For metal dust, it is recommended to use a protective mask of N95 or higher.
For metal dust, it is recommended to use a protective mask with a level of N95 or higher, if the metal dust is lead, cadmium, arsenic, etc.
For carcinogenic or highly toxic dust, it is recommended to use 3m of 8233;If the dust is not very toxic, 8210V or 8511 is recommended, which are equipped with exhalation valves, which can expel the hot air exhaled by the user out of the mask in time, and significantly improve the comfort of wearing the mask in a stuffy environment.
If there is still hydraulic oil on site, it is recommended to use 8577 masks to protect against particulate matter and organic odors, if possible.
It is recommended to use 7502 mask + 2097 filter cotton (effective protection against particles and organic odors, this combination is used for a long time.
Ben will be more economical).
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First of all, 3M masks are not all disposable masks, but masks that can be used for limited times, not only 3M medical masks or 3M dust masks, but they can be used repeatedly, and when the 3M masks are damaged or the appearance is dirty, they need to be replaced in time.
Secondly, the 3M mask is a maintenance-free mask, that is to say, it cannot be cleaned, because the 3M mask is made of electrostatic filter cotton material, it will directly affect the filtration and adsorption effect of the filter material after cleaning.
Finally, it is more important to store 3M masks after personal use, and it is best to store them in a sealed bag to avoid direct contact between the inside of the mask and the outside world.
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9501 vs. 9502The level of protection is the sameAll comply with GB2626-2006 KN95,There is only one difference, and it is in the way it is wornThe 9502 is over-the-head and the 9501 is over-the-ear.
The KN95 level is one of the levels specified in the Chinese standard GB2626-2006, and N95 is one of the classes specified in the American standard 42 CFR 84. The technical requirements and test methods of these two levels are basically the same, but they belong to the standards of different countries.
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3M masks can be divided into categories if they are divided into categoriesMedical masks, particulate matter protection masks, comfort and warm masksThere are three categories, each type is different before, and each type of mask has a different protective focus, as follows:
1. Different use scenarios
3M medical protective masks are divided into domestic and imported, with the protective performance of medical surgical masks and particulate matter protective masks, which are dedicated to hospitals.
3M particulate matter protective masks are commonly known as 3M dust masks. The use of protective masks at work to protect the health of workers belongs to the category of occupational hygiene.
The 3M Comfort Thermal Mask has the effect of keeping warm and cold, but it does not have the function of protecting against fine particles.
Second, the use effect is different
3M medical respirators filter airborne particles and block droplets, blood, fluids and secretions.
3M particulate respirators are designed to reduce the amount of harmful particulate matter (from coarse sand and dust, fumes, fumes, air pollutants, and fine pathogens) suspended in the air through the respiratory tract.
The 3M Comfort Thermal Mask uses 3M Thinsulate's high-efficiency insulation material, which is composed of multiple layers of microfiber to retain air, and the warmth is equivalent to that of down, which is a kind of thermal product.
Third, the composition is different
m Medical protective masks.
It is composed of a mask face and a tension band, in which the mask face is divided into three layers: inner, middle and outer, the inner layer is skin-friendly material (ordinary sanitary gauze or non-woven fabric), the middle layer is an isolation filter layer (ultra-fine polypropylene fiber meltblown material layer), and the outer layer is a special material antibacterial layer (non-woven fabric or ultra-thin polypropylene meltblown material layer).
m. Particulate matter protective masks.
Generally, the materials used to filter particulate matter are mineral fibers, natural fibers or synthetic fibers.
m Comfort warm masks.
3M comfort thermal masks need to comply with the relevant regulations of fabrics and materials, mostly cotton, mainly to keep warm.
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With a filter canister, the front is a KN90 level or above filter cotton, followed by a filter canister, there are many kinds of filter canisters, I don't know which one to use.
There is also a kind of dust mask, and the filter level is KN95 or above.
There is an effect. As a joke, masks are sold more expensive than 3m anti-paint gas masks.
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Lanhe's LN9001 mask has a filtration effect of KN95 level, and it is comfortable to breathe and has a good sealing effect, but it is a little higher; PM1 disposable mask in March 2015 Shanghai Quality Supervision Bureau sampling inspection of 69 batches of products, including 3M, the filtration effect is the highest, to achieve the best effect on the protection of the virus, but compared with the KN90 level above the product, ** low but the sealing is quite poor, can be worn outside the mask again a disposable mask to enhance its sealing, to achieve its most cost-effective.
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Masks are too hard to buy nowadays. Because, the mask factory can't produce it. It's very, very difficult to get a pack of masks, so you have to take advantage of the value of the whistle if you get it. When you go out, you have to bring it back to wash your hands and pay attention to hygiene. It's not contagious!
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CM should have a lot of antivirus masks.
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Generally, masks are marked with a model number, and you only need to identify it from the model. If you want to be anti-virus and anti-bacterial, you can choose a medical mask or a general anti-smog mask, which also has an antibacterial effect.
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Well, you can have an antivirus, just bring it in the right way.
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Now the main thing is that masks are useful.
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How can it be so big? The rent is on the line.
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There are many kinds of 3M gas masks, so it's up to you to wash them.
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If you stuff wood, there are still convenient pockets, you can search for them on **.
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Three loves. What anti-virus masks are available? Yes, yes, ninety-five.
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Some of the houses that are raised are deducted to the big. You can look at the room with a little bit of it in the inside.
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Wow, there are quite a few masks for this easy to read.
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What anti-virus masks does wood have? I don't know, I don't know what masks are available to help read, as long as they are approved by the Health Bureau, they can be used.
Hello! 3M Corporation, the full name of Minnesota Mining and Manufacturing, is Minnesota Mining and Manufacturing Company. Founded in 1902 and now headquartered in St. Paul, Minnesota, USA, it is a world-renowned innovative and diversified multinational company, and is one of the Dow Jones' 30 Industrial Component Index**. >>>More
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Dozens of dollars a roll can be pasted 4 cars, each car is 300-5000 yuan after the paste, this thing is profitable, don't care about the brand, good brands are more fake, the main thing is to find a big decoration store, good credit is better. Ask how many years to ensure that the color does not fade, if the equipment store has the conditions, let them measure how much ultraviolet light the explosion-proof film is prevented. After pasting, write the receipt and warranty card, and it will not fade for at least three years. >>>More
Hello! We are happy to answer for you, rosin combustion products have a complex composition, in addition to particulate matter, there are also gaseous substances of unknown composition. In the case you mentioned, it is recommended that you choose an anti-particulate respirator with activated carbon and a filtration efficiency of at least KN95 (95% efficiency), such as 3M 8247 (NIOSH R95) or 3M 8577 (NIOSH P95) Both masks have a small amount of activated charcoal that you can use to see if it works. >>>More
Solution: x=-3 8
Because:|m-3|+|n-2|=0 and the absolute value of any number is greater than or equal to 0, so: |m-3|=0,|n-2|=0; >>>More