3 MCN95 masks can be used in cement factories, can mom prevent smog?

It can be dust-proof and haze-proof. But pay attention to the model and style.

If it is occupational protection, it is recommended to wear a replaceable filter cotton type. Cement plants are an industry with a high incidence of pneumoconiosis, and it is recommended to do a good job of respiratory protection.

1. Dust masks belong to special labor insurance and must be certified by GB2626-2006. You can't use a normal mask.

2. Dust masks have a protection level according to the national standard. Low N90, Medium N95, High N100. Among them, N100 can protect against ultra-fine dust. For good protective effect, it is recommended to choose a KN100 grade dust mask.

3. Dust masks are available in sizes according to the national standard. You should choose the right size according to your head shape, and the sealing effect is good.

4. Try to choose a breathable one. Some manufacturers adopt a double-sided, double-piece design, and the breathing resistance is basically not felt.

5. Try to choose long-lasting cotton filters. Some manufacturers use long-lasting filter cotton, which has low breathing resistance, and the filter can be used for nearly a month. The average daily cost is one dollar. Such masks are easily accepted by the general public.

On December 21, 2015, **10, 13:22 Truth Column, there was a report on how to choose a mask.

Mainly look at the protection level, KN95 level can prevent haze.

Dust masks belong to special labor protection equipment in China, and the national standard GB2626-2019 "Self-priming Filtering Anti-particulate Respirator" must be implemented, which divides dust masks into three levels: KN100, KN95 and KN90. For example, Baoshunan's 3216 KN100 and 3219 KN100 dust masks can achieve more protection efficiency against ultra-fine dust above microns.

The scientific selection of dust masks certified by the GB2626-2019 standard can help prevent lung damage.

1) Choose a compound half-mask type: disposable masks are not suitable for long-term or occupational protection due to their high air leakage rate;

2) Choose KN100 level: high dust environment and low protection rate will lead to physical injury;

3) Choose a silicone mask, which has a relatively long service life, is soft and comfortable. Wear it for a long time, it is not easy to cause allergic reactions; Masks with high hardness are easy to cause facial indentation;

4) It is extremely important that masks come in large and small sizes. It is not recommended to buy those so-called universal models of masks, different people are tall, short, fat and thin, and have different face shapes.

5) There are two types of masks: covering the mouth and nose, covering the mouth, nose and chin, and it is recommended to use the latter, which is relatively comfortable;

6) It is recommended to choose a breathless mask: especially a dust mask with a double filter + double filter surface design, which has a longer service life and is relatively smoother to breathe.

As long as it is the national standard KN95, it can be anti-haze.

Note that many product test reports are fraudulent.

Quality and safety certifications are required.

KN95 is anti-smog. The KN95 level is very good. At an ambient concentration of about 350 g m3: the decrease rate is more than 84% after the actual wearing of a KN95 mask.

After actually wearing a KN90 mask, the decrease rate is as follows; Wearing an ordinary disposable non-woven mask has no effect on reduction. The results suggest that wearing particulate masks on hazy days is effective. After covering the sampling port with a mask, the decrease rate of KN95 mask pairs was greater than 91%, and the decline rate of ordinary disposable non-woven masks was.

When choosing a mask, you should also choose a mask that is differentiated by size and type. It is better to choose a compound half mask as much as possible.

The maximum air leakage rate of disposable KN90 and KN95 masks in the national standard is 10%, plus the leakage rate of the filter itself, some even regardless of size, and the face is not well sealed, which will lead to a higher air leakage rate, resulting in high-grade masks and low protective effect.

Secondly, it is important to put easy breathing in the first place. Breath-holding masks can lead to higher air leakage rates and inability to wear them for long periods of time.

At present, dust masks are mandatory in GB2626-2006 "Respiratory Protective Equipment--- Self-priming Filtering Particulate Respirators".

According to the national standard, protective masks are divided into two types: anti-oil particulate matter (oil smoke, oil mist and non-oil particulate matter, the protection level is divided into KP100, KP95, KP90) and non-oil particulate matter (dust, smoke, fog, microorganisms, etc., the protection level is divided into KN100, KN95, KN90 level). The number stands for the effectiveness of protection.

KN100 and KP100 can protect against 75 nanometer particle size non-oily particles and 185 nanometers of oily particles above the protection efficiency.

If you use it correctly, the one you buy will work, and the difference between N90 and N95 is only 5 points in theory. (KN90 90%, KN95 95%) but you will not feel the difference yourself, the size of the particles used in the test is microns, much less. Yours is said, I don't know if I heard it, the rumors kill people.

It is fine particulate matter, also known as fine particles, fine particles. Fine particulate matter refers to particulate matter in ambient air with an aerodynamic equivalent diameter of microns or less. It can be suspended in the air for a long time, and the higher its concentration in the air, the more serious the air pollution.

KN95 is not a brand, but a standard, which means that the filter material in the mask can protect against non-oily particles, and the filtration efficiency is 95%. According to the national standard, KN90 is the most basic level, and it is enough for ordinary people to use KN90 masks. Therefore, the KN95 mask can prevent smog to a certain extent.

Moreover, it is recommended that you can choose zeolite KN95 masks, which far exceed the effect of ordinary KN95 masks in China!

It's definitely not going to work, if it's dirty, change it again. Professional anti-particulate masks cannot be washed and disinfected, otherwise the filter material in the mask and the structure of the mask will be damaged. If it is used to a certain extent, it should be discarded as a whole and replaced with a new one.

It should be okay You take a closer look at my follow-up answer The domestic husband and wife goddess accompanies you without a condom You're welcome.

OK. "KN95" is the GB2626-2006 standard for respiratory protective equipment published by the State Administration of Quality Supervision, Inspection and Quarantine and the Standardization Administration of the People's Republic of China, not a specific product name. As long as it meets the KN95 standard and passes the GB2626-2006 standard for respiratory protective equipment, it can be called a "KN95 type mask".

In the GB2626-2006 standard, KN95 is the standard for dust protection, which is cheap and easy to adopt in the relevant dust industry. N95 masks are used for occupational respiratory protection, including certain dust particles (such as dust, smoke and other non-oily particles).

The most important feature of the KN95 mask is that it can prevent droplet infection caused by splashing of patients' body fluids or blood. The size of the droplets ranges from 1 to 5 microns in diameter. The U.S. Occupational Safety and Health Administration (OSHA) requires healthcare workers exposed to TB bacteria to wear masks above the N95 standard.

No, the main filtration effect of the KN95 mask is through the principle of electrostatic adsorption, the small molecules of each filter cloth are covered with a lot of high current, and small particles will be adsorbed after passing through. If it is washed with water, it will cause the static electricity to disappear, and the filtration effect will decrease, Bottle Technology Mask reminds KN95 masks that it is best not to wash them with water.

Shupai Environmental Protection: Can KN95 masks be washed and worn again? How much do you know about mask trivia?

Hello! We are glad to answer that any anti-particulate mask certified by an official organization according to authoritative standards (such as Chinese standard GB2626-2006) is effective for harmful in haze weather, and anti-particulate masks certified by China KN90 level can meet the basic requirements of prevention.

The filtration efficiency of the KN90 class is 90%, and the KN95 is 95%, both can be used. Since the actual protective effect obtained by the user mainly depends on the fit between the mask and the user's face and the actual use time, it is recommended to try on several masks, choose products with better fit, more comfortable to wear, and willing to wear.

We hope you are satisfied with the above reply! If you still have questions, please feel free to ask the company.

When buying anti-smog masks, you can look at the standard and the filtration efficiency.

If you want to talk about the standard, everyone is most familiar with the N90 and N95 series masks of the 3X brand, which are named after the Niosh standard. In addition to the NIOSH standard, the ASTM standard of the American Society for Testing and Materials, the KN standard of China and the FFP standard of Europe are common, which can all be used to measure the important indicators of masks.

Among the indicators of masks, everyone is most concerned about the filtration efficiency of particulate matter. Therefore, before purchasing masks, you can learn more about the particulate filtration efficiency corresponding to various standards. The "N95" in NIOSH indicates a 95% efficiency for particulate matter down to the micron.

In fact, the highest level of ASTM and FFP standards requires higher particulate filtration efficiency than NIOSH N95. For example, ASTM Level 3 requires a filtration efficiency of 98% for particles as small as microns.

Puweixin meets the highest standards for medical masks in the United States, with good filtration, not only against particles but also against droplets. It can filter particles as small as microns and bacterial or viral vectors (commonly found in droplets) as small as microns. With SecureFit patented technology, it can be adjusted to adapt to different face shapes to achieve a high fit.

At the same time, the six-point support disperses the pressure, and there are no strangulation marks on the face, making it very comfortable to wear. It's just that ** is not very close to the people, and a piece costs 29 yuan ......

KN95, KN97 and KN99 are grades in the GB2626 standard in China. It's about the efficiency of filtering particulate matter. However, formaldehyde is a small molecule in the air, so it cannot be removed.

However, you can choose zeolite KN95 protective mask, which has a filtration efficiency of 99% for particles, and the zeolite filter layer can adsorb and decompose harmful gases such as formaldehyde.

KN masks are mainly anti-dust, haze, smoke and microorganisms. Formaldehyde is an organic gas that requires gas mask protection. The two are not one and the same.

Including the fact that many people now use masks containing activated carbon to prevent smog, which is the wrong choice.

The way to clean the dust: now masks must implement the GB2626-2006 standard. The grades of dust masks are divided into three grades: KN100, KN95, and KN90.

Among them, KN100 can achieve nearly 100% (more) protection effect against ultrafine dust. If the granularity is large, KN95 grade can be selected.

The protective effect of dust masks depends on 2 aspects. One is the filtration efficiency of the filter cotton. The second is how tightly the mask is combined with the face. Therefore, masks must be divided into large and small sizes, and the fit effect of masks and faces varies from person to person.

Gas masks now implement the GB2890-2009 standard, and gas masks are divided into ordinary gas masks, multi-functional gas masks, and comprehensive gas masks (dust + harmful gases) according to different protective substances

The way to clean dust: the scientific selection of dust masks certified by GB2626-2006 standards can help prevent lung damage.

1. Choose a duplex half mask type. Disposable masks are not suitable for long-term or occupational protection due to their high air leakage rate.

2. Choose KN100 dustproof filter cotton for use. A low rate of protection will lead to physical injury.

3. It is more comfortable to choose silicone material. It is suitable for long-term wear and is not easy to cause allergic reactions. Masks with high hardness are easy to cause facial indentation;

4) It is extremely important that masks come in large and small sizes. Don't buy masks that are called generic models. Prone to air leakage.

5. There are two types of masks that cover the mouth and nose, covering the mouth, nose and chin, and it is recommended to use the latter, which is relatively comfortable.

6. It is recommended to choose a breathing mask. Some masks are designed with double filters, and the filters are double-sided, so that the masks are relatively easy to breathe.

At present, there are KN100 grade products in China, and the comprehensive use cost is about one yuan per day.

Gas-free masks, as the name suggests, are still used, and according to the current situation of smog in our country, it is recommended not to exceed 3 days.

In fact, the ability of a mask to prevent smog mainly depends on two points: first, the protection level of the mask, and second, the degree of combination between the mask and the face.

If you choose a mask, it is recommended to choose a mask in the following way:

1. As a special labor protection product, dust masks must be certified by GB2626-2006.

2. Masks are divided into disposable and replaceable filter half masks and full masks. For long-term occupational protection use, it is recommended to use a replaceable filter cotton half mask. Occasionally, when you go out to work, you can choose a disposable dust mask.

3. The materials of the duplex half mask include silicone, plastic, etc., the silicone material is relatively soft and comfortable, and the facial pressure is low.

4. For dust and oily particles, protective masks are divided into oil-proof (oily smoke, oil mist, dust, smoke, fog, microorganisms, represented by KP) and dust-proof (dust, smoke, fog, microorganisms). For dust prevention, there are three levels of protection level: KN100, KN95 and KN90, the working environment is diverse in pollutants, and the harm to people is greater, it is recommended to choose KN100 level.

5. It is particularly important that the mask is divided into sizes according to the national standard. Many masks are not semicolonized, and the effect will vary from person to person.

6. There are two types of masks: covering the mouth and nose and covering the mouth, nose and jaw, of which the second type has a large contact mask, good sealing and low pressure sensitivity.

Don't ignore respiratory protection, using fake and shoddy goods, gauze, towels, etc. as masks, which can easily lead to lung diseases.

At present, there are 3M8233 and Baoshunan 3201 N100 masks in China, which have a high level of protection and can effectively prevent the occurrence of respiratory diseases.