1, after opening the outer package and taking out the mask, spread the mask flat to distinguish the top and bottom, the inside and the outside.

2. The part of the mask with iron bars is placed on the mask with both hands facing upwards, with the upper edge close to the bridge of the nose and the lower edge close to the chin.

3. Adjust the fit between the mask and the face to make it fit completely and fix the ears.

4. Fix the bridge of the nose and wrap the chin at the lower edge.

5. Press the nose clip to make it fit the face.

6. Hold the strap and gently remove it.

Extended data:

Disposable masks (medical surgical masks) can prevent respiratory infections to some extent, but they cannot prevent smog.

Medical surgical mask has three layers, namely waterproof layer, filter layer and comfort layer from outside to inside. The comfort layer is a non-woven fabric. When wearing, the white non-woven fabric faces inward, the blue waterproof layer faces outward, and the side with metal sheet faces upward. Don't wear it backwards. After the rubber band is hung on the ear, hold the metal piece and nose to make the cheek smooth, and try to make no gap between the mask and the face. When purchasing, you should choose a mask clearly marked with the words "medical surgical mask" on the outer packaging.

N95 mask can effectively prevent respiratory tract infection and smog. N95 mask is one of nine kinds of anti-particle masks certified by NIOSH (National Institute of Occupational Safety and Health). "N" means particles that are not suitable for oiliness (cooking fumes are oily particles, but droplets produced by people talking or coughing are not oily); "95" means that the filtration efficiency reaches 95% under the detection conditions specified by NIOSH standard.

N95 is not a specific product name. As long as the product meets the N95 standard and passes NIOSH review, it can be called "N95 mask". The biggest feature of N95 mask is that it can prevent droplet infection caused by splashing of patients' body fluids or blood. The diameter of the droplet is 65438 0 to 5 microns. The Occupational Safety and Health Administration (OSHA) of the United States stipulates that medical personnel exposed to tuberculosis must wear masks above N95 standard. Compared with medical surgical masks, N95 masks have better sealing performance. When choosing N95 mask, try to choose N95 mask without breathing valve.

Ordinary cotton masks may be made of cotton, gauze, wool, canvas and velvet. Because the material itself is not dense enough to prevent infection.