Brief introduction of wearing N95 mask

Brief introduction of wearing N95 mask Take the 3M N95 mask as an example, briefly introduce how to wear the mask:

1, first pull the headband every 2 to 4 centimeters (for type 8210 only).

2. Place the mask in the palm of your hand and place the metal strip on the nose in the direction of the fingertip so that the headband will hang naturally.

3, wear a mask, nose part of the metal bar up, close to the face.

4. Place the mask on the top of the mask and place it behind the head. Then lower the headband over the head and place it behind the neck and adjust to a comfortable position.

5, the two fingers along the nose of the metal bar, from the middle to both sides, slowly press inward until close to the bridge of the nose.

6, both hands to cover the mask as much as possible and positive pressure and negative pressure test.

Positive pressure test: Cover your mask with your hands and exhale vigorously. If air overflows from the edge of the mask, that is, if it is improperly worn, the headband and bridge of the nose should be re-adjusted;

Negative pressure test: Cover your mask with your hands and exhale vigorously. The central part of the mask will be trapped. If air enters the edge of the mask, it will be worn improperly and the headband and bridge of the nose should be re-adjusted.

7, the function of breathing valve:

In a hot or poorly ventilated or labor-intensive work environment, use a mask with a breathing valve to help you feel more comfortable when exhaling. The principle of the breathing valve is to exhale the positive pressure of the valve to open the valve piece to excrete the exhaust gas quickly and reduce the sweltering feeling when the mask is used. The suction pressure will automatically close the valve to avoid Inhalation of pollutants in the external environment.

Step 1 Pull the straps loose every 2~4cm. Step 2 Put on the mask, place the straps on the top of the head and behind the head. Step 3 Press the metal strips on the side of the mask to make the mask suitable for your face Step 4 Check the tightness of the mask. As follows: Tap the mask and take a deep breath. It is required that gas does not leak from the edge of the mask when exhaling, and the mask is slightly sunken when inhaling

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