Product Details

The N95 mask is one of 9 types of particulate protective masks certified by NIOSH (National Institute for Occupational Safety and Health). N95 is not a specific product title, as long as it conforms to the N95 specification, and products that have been inspected by NIOSH can be called N95 masks, which can filter particles with aerodynamic diameter and physical diameter of 0.075µm ± 0.020µm to reach 95% . Brief introduction of N95 mask

The N95 mask is one of 9 types of particulate protection masks certified by NIOSH. "N" means not resistant to oil. "95" means that when exposed to a regular number of special experimental particles, the particle concentration in the mask is more than 95% lower than the particle concentration outside the mask. The 95% value is not a uniform value, but a minimum value. N95 is not a specific product title, as long as it conforms to the N95 specification, and products that have been inspected by NIOSH can be called "N95 masks." The protection level of N95 means that under the test conditions of the NIOSH rules and regulations, the filter efficiency of the mask filter material to non-oily particulate matter (such as dust, acid mist, paint mist, microorganisms, etc.) reaches 95%.

Function and use

The filtering efficiency of the N95 mask for particles with an aerodynamic diameter of 0.075µm ± 0.02µm reaches more than 95%. The aerodynamic diameter of airborne bacteria and fungal spores mainly varies between 0.7-10µm, which is also within the protection range of N95 masks. Therefore, the N95 mask can be used for respiratory protection of certain particles, such as dust generated by grinding, cleaning and disposing of minerals, flour and certain other materials. It is also suitable for liquid or non-oily generated by spraying. Particulate matter of harmful volatile gas. Can effectively filter and purify the inhaled abnormal breath (except toxic gases), help reduce the exposure of certain inhalable microbial particulate matter (such as mold, anthrax, tuberculosis, etc.), but it cannot eliminate contact infection, illness or death risks of

The U.S. Department of Labor has recommended medical staff to use N95 masks to prevent microbial airborne diseases such as influenza and tuberculosis.

Common varieties

According to the shape of the mask, it is often divided into two types: cup type and folding type.

Safety standard

NIOSH certified other anti-particulate mask levels also include: N95, N99, N100, R95, R99, R100, P95, P99, P100, a total of 9 kinds. These protection levels can obscure the protection range of N95.

"N" means not resistant to oil, suitable for non-oily particulate matter.

"R" means resistant to oil, suitable for oily or non-oily particulate matter. If used for the protection of oily particulate matter, the application time should not exceed 8 hours.

"P" means oil proof, suitable for oily or non-oily particulate matter. If used for oily particulate matter, the application time should follow the manufacturer's initiative.

"95", "99" and "100" refer to the degree of filtration efficiency when the test is stopped with 0.3 micron particles. "95" means that the filtration efficiency is above 95%, "99" means that the filtration efficiency is above 99%, and "100" means that the filtration efficiency is above 99.7%.

Suitability test

In addition to the filtering efficiency of the mask, the tightness of the mask and the face is one of the important factors that determine the application effect of the mask. Different types of masks have a big difference from the suitability of the face of the person. Therefore, before using the mask, the suitability test of the mask should be stopped first. After the wearer's face density test, ensure that the air can enter and exit through the mask when it is close to the edge of the face.

Use notes

1. Wash your hands before wearing a mask, or prevent your hands from touching the inside of the mask while wearing the mask to reduce the possibility of the mask being contaminated.

2. Clearly distinguish the inside and outside of the mask, up and down.

3. Do not squeeze the mask by hand. N95 masks can only isolate the virus on the surface of the mask. If you squeeze the mask by hand, the virus will wet the mask with the droplets and it is easy to form virus infection.

4. Try to make the mask and the face have a good adhesion. The simple experimental method is: after putting on the mask, exhale hard, and the air cannot leak from the edge of the mask.

5. The protective mask must be in close contact with the user's face. The user must shave the beard to ensure that the mask can be closely attached to the face. Anything between the beard and the pad seal and the face will cause the mask to leak.

6. After adjusting the position of the mask according to my face shape, use the index fingers of both hands to press the nose clip along the upper edge of the mask to make it fit closely with the face.

When the following conditions are present, the mask should be changed in time:

1. When the respiratory impedance increases significantly;

2. When the mask is damaged or damaged;

3. When the mask and face cannot be in close contact;

4. The mask is contaminated (such as blood stains or droplets).

5. The mask has been contaminated (once used in individual wards or patient contact);

6. If the mask contains activated charcoal and there are odors in the mask;

7. The duration of mask use exceeds the duration of the initiative.

8. Expert initiative

The N95 masks sold online can reach 95% after being tested and filtered. But regarding the N95 mask, the doctor reminded the public to pay attention: "In theory, the more sealed the mask is, the better the effect of blocking the particulate matter. Conversely, the tighter the mask, the harder it is to breathe, especially for patients with cardiovascular disease Poor wearing may also cause dizziness and breathing difficulties due to lack of oxygen. Choose to wear more carefully

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