Question 1: How often should masks be washed? Things to note when wearing a mask: (1) Wash your hands before wearing the mask and before and after taking it off; (2) Keep the mask close to your face : ① The colored side of the mask faces outward, and the side with the metal sheet faces upward; ② Tie the rope that fixes the mask, or wrap the elastic band of the mask around the ears to make the mask close to the face; ③ The mask should completely cover the mouth, nose and Chin; ④ Press the metal pieces on the mask along both sides of the bridge of the nose to make the mask close to the face. (3) After wearing the mask, avoid touching the mask to prevent the protective effect from being reduced; if you must touch the mask, wash your hands thoroughly before and after touching it. (4) When taking off the mask, try to avoid touching the outward part of the mask, as this part may be contaminated with germs. (5) After taking off the mask, wrap it in tape or a paper bag, and then put it into a covered trash can for disposal. (6) Masks should be replaced at least once a day. If the mask is damaged or soiled, it should be replaced immediately.
How often should we replace our masks? In other words, how should we evaluate the replacement of masks?
In the usual field of industrial dust protection, we recommend that customers find that their breathing becomes difficult during use, and inhalation becomes difficult and load-bearing, which means that the mask needs to be replaced because the mask filters The filter holes of the paper have become clogged with dust and particulate matter. This is a more important replacement and evaluation standard and method for anti-particulate masks. Of course, if you feel that your mask is too dirty, damaged, or due to too much sweat and exhaled water vapor, you can replace it.
How often should we replace masks when many masks are used for quarantine, epidemic prevention, medical treatment, and antibacterial and antiviral use?
Due to the infectivity of the virus and the current transmissibility of influenza A (H1N1) virus. I recommend that mask users replace their masks every time they take them off when conditions permit.
The correct method and precautions for wearing a mask are as follows.
1. Thickness of the mask:
Experts recommend wearing a 12--16-layer mask. If you wear a mask that is too thick, you will feel suffocated, especially if you wear it for a long time, your nasal mucosa will change. It becomes fragile and loses the original physiological function of the nasal cavity. If you wear a mask that is too thick, it will be difficult for the mask to fit tightly against your nose and lose its protective significance.
2. The size of the mask:
Some people think that the bigger the mask, the better, and there is still room for covering the mouth and nose. In fact, such masks do not have the effect of filtering harmful substances, because harmful substances will be inhaled through the small gaps between the face and the mask when they encounter the air. The hygienic requirements for wearing a mask are that the mask should be able to cover most of the area below the mouth, nose and eye sockets. If the mask is too big or too small, it may cause germs. dust. Dirt can easily enter from the edges of the mask or the gap between the two, which will affect the filtering effect of the mask.
3. Hygienic requirements for masks:
Masks are in direct contact with the mouth and nose, so their hygiene is particularly important. The inner and outer sides of the mask cannot be used interchangeably, otherwise the dirt contaminated on the outer layer will be inhaled into the human body when it is directly close to the face and become a source of infection. In addition, when the mask is not worn, the side close to the mouth and nose should be folded and put in Keep it in a clean plastic bag for later use. Do not stuff it into your pocket or hang it around your neck.
4. When cleaning the mask, be careful to scald it in boiling water for 5 minutes, then scrub it with soap. After washing it with clean water, hang it in the hot sun. Of course, after washing it for more than 10 minutes, it is best to choose a new mask to prevent the cotton gauze from wearing out! It is best to wash it in time every day, or buy a disposable one, because oral respiratory germs can easily breed in the mask. After washing, it is best to dry it in the sun.
Question 2: How often should masks be washed? It is best to wash it in time every day, or buy a disposable one, because oral respiratory germs can easily breed in the mask. After washing, it is best to dry it in the sun.
Question 3: Do masks need to be cleaned frequently? How often you need to wash it depends on what kind of mask you bought. Some masks cannot be cleaned. The cleaning time also depends on the environment. If there is any substance in the mask and it turns black, it should be cleaned. There is no fixed time depending on the environment.
It is recommended to purify it. Learn more about masks in the cloud
Question 4: How to clean a respirator mask and how long can it be used? Classification of masks
1. The new standard for dust respiratory protection 42CFR84 of the National Institute of Occupational Safety and Health (NIOSH) was announced on June 8, 1995 (based on filter material classification)
N series: No time limit for protection against non-oily suspended particles
R series: Protection against non-oily suspended particles and sweat and oily suspended particles for eight hours
P series: Protection against non-oily suspended particles and sweat There is no time limit for oily suspended particles. When the carrier of some particles is oily, these substances will reduce the electrical properties when attached to the electrostatic non-woven fabric, allowing fine dust to penetrate. Therefore, the filter material to prevent oil-containing aerosols must undergo special electrostatic treatment. , to achieve the purpose of preventing fine dust. Therefore, each series is divided into 3 levels: 95%, 99%, 99.97% (referred to as 95, 99, 100), so there are 9 subcategories of filter media.
2. EU EN149 standard:
FFP1: Minimum filtering effect》80%
FFP2: Minimum filtering effect》94%
FFP3: Minimum filtering effect》97%
3. Australian AS1716 standard
P1: Minimum filtering effect》80%
P2: Minimum filtering effect》94%
P3: Minimum filtering effect》99%
3. Japanese MOL verification standard:
DS1:
DS2: Minimum filtering effect 》99%
DS3: Minimum filtering effect》99.9%
4. Taiwan CNS standard:
5. China national standard GB6223-86 UDC 614.894: Divided into four categories
The above inspection standards are all tested with a particle size of 0.3 microns. The EU standard testing flow rate is 95L/min, and the US standard is 85L/min. my country's national standard suspended particle size>
Question 5: How long can 3m9001v. be used? Can it be cleaned? How often should it be cleaned? Hello! I am happy to answer your question.
3M masks do not have strict restrictions on the use time. It is usually stipulated that protective masks can be replaced after one working shift. The main reason is that protective masks cannot be washed and should not be used. Workers are required to use unhygienic masks. However, if the actual use time of the protective mask is short, for example, it is only worn for a short time when commuting to and from get off work every day, and if the hygienic conditions are acceptable and the protective mask has not failed (such as deformation, damage, or the breathing resistance is too high), it can be reused.
In addition, please note that 3M masks are maintenance-free, that is, they cannot be washed. Please store it properly after each use. Once the mask is damaged, the inside is dirty, or you feel excessive breathing resistance, you can replace the mask immediately.
I hope the above answer satisfies you! If you still have questions, please feel free to ask the company questions.
Question 6: How many days can a 3m disposable mask be used? I feel like one a day is too wasteful. Hello! I am happy to answer your question,
3M masks do not have strict restrictions on the use time. How long you use them depends mainly on your operation conditions. The concentration of particulate matter in different environments is different, the nature of the particulate matter is different, and the use time of each person is different. Various anti-particulate masks have different dust holding capacities, as well as different usage and storage methods, which will affect the service life of the masks, so there is no way to uniformly specify the specific replacement time. It is recommended that when any part of the anti-particulate mask is found to be damaged, and breathing resistance is obviously increased, or it is considered unhygienic to continue wearing it, the entire mask should be discarded and replaced with a new one.
However, please note that 3M masks are maintenance-free, that is, they cannot be washed, and they are not just for one-time use.
Please store it properly after each use. Once the mask is damaged, the inside is dirty, or you feel that the breathing resistance is too high, you can replace the mask.
In addition, if it is a new mask, it is recommended to put it in the original packaging. If the used mask needs to be stored, it is recommended to put it in a breathable bag, such as a clean paper bag.
I hope the above answer satisfies you! If you still have questions, please feel free to ask the company questions.
Question 7: Are 3M protective masks disposable? How long does it take to wash them? 3M protective masks are disposable. Since the mask has no replaceable parts, it needs to be discarded as a whole after it expires. It is also called disposable. Face shield, or maintenance-free mask. According to the guidelines of medical facilities, disposable protective masks should be discarded immediately after use and no attempt should be made to clean disposable protective masks at any time.
According to NIOSH classification definition of filter materials,
N series: protects against non-oily suspended particles, no time limit;
R series: protects against non-oily suspended particles and sweat oily suspended particles, the time limit is eight hours;
P series: protects against non-oily suspended particles and sweat oily suspended particles, no time limit;
NIOSH divides the standards of masks into three categories , respectively N series, R series and P series, N is non-oily particles, R and P are oily particles,
However, the protection effect of R level against oily particles is only eight hours, while P level does not have this effect. Limitations, these three categories each have three filter efficiency standards of 95 (95%), 99 (99%), and 100 (99.97%), so there are nine types of masks.
Since biological particles are mostly non-oily particles, N level can be used. The N95 level means that the filtration efficiency of protecting non-oily particles is 95%, and N95 is the most basic level among all certification levels.
N95 level filtration standards in other countries
1. EU EN149 standard
FFP1: Minimum filtration effect>80%
FFP2: Minimum filtration effect>94%
FFP3: Minimum filtration effect>97%
Question 8: Is this mask disposable? Can it still be washed? , or how long does it take? Professional protective masks 3M protective masks are disposable. Since the mask has no replaceable parts, it needs to be discarded as a whole after it expires. It is also called a disposable mask or a maintenance-free mask. According to the guidelines of medical facilities, disposable protective masks should be discarded immediately after use and no attempt should be made to clean disposable protective masks at any time.
According to NIOSH classification definition of filter materials,
N series: protects against non-oily suspended particles, no time limit;
R series: protects against non-oily suspended particles and sweat oily suspended particles, the time limit is eight hours;
P series: protects against non-oily suspended particles and sweat oily suspended particles, no time limit;
NIOSH divides the standards of masks into three categories , respectively N series, R series and P series, N is non-oily particles, R and P are oily particles,
However, the R-level protection against oily particles can only last for eight hours, while the P-level does not have this effect. Limitations, these three categories each have three filter efficiency standards of 95 (95%), 99 (99%), and 100 (99.97%), so there are nine types of masks.
Since biological particles are mostly non-oily particles, N level can be used. The N95 level means that the filtration efficiency of protecting non-oily particles is 95%, and N95 is the most basic level among all certification levels.
N95 level filtration standards in other countries
1. EU EN149 standard
FFP1: Minimum filtration effect>80%
FFP2: Minimum filtration effect>94%
FFP3: Minimum filtration effect>97% The medical mask imported from the United States has good filtration performance and prevents not only particles but also droplets.
The filtration efficiency for particles as small as 0.1 microns is 99.8%, and the filtration efficiency for bacteria or viral vectors (common in droplets) as small as 0.3 microns is 99.9%. Using SecureFit patented technology, it can be adjusted to adapt to different face shapes to achieve a high fit. J 2568 wishes you good health
Question 9: How many days should a general medical mask be washed? How to wash? Are medical masks generally disposable? It is better to wash the mask once a week. Remember to wash it separately by hand, not in the washing machine with clothes, socks and the like. The disease enters through the mouth~