In today's normalization of epidemic prevention and control, masks are required to be worn in any public place, which will inevitably lead to the "secondary" use of disposable masks. Under normal circumstances, disposable medical masks and medical surgical masks are used for limited times, and the cumulative use does not exceed 8 hours; occupational exposure personnel use masks for no more than 4 hours and cannot be reused. Next, let's take a look at Precautions for proper use and replacement of Disposable Medical Face Mask :

When taking off the mask, remember 4 "don't":

1. Do not touch the outer surface of the mask;

2. Do not touch the inner surface of the mask;,

3. Do not touch the masks used by others to avoid cross infection;

4. Do not put it directly in the bag, pocket, etc., it is easy to cause the risk of persistent infection. It can be folded from the inside to the outside and packed in a ziplock bag.

5. Wash your hands with soap, hand sanitizer or alcohol-based hand sanitizer before putting on the mask or after taking off the mask.

Please replace the mask in time in the following situations

1. You need to change the mask when you have been to a fever clinic or come into contact with a patient with high fever;

2. The mask you wear needs to be replaced after it gets wet;

3. The mask needs to be replaced when there is peculiar smell in the mask;

4. Please change the mask when breathing is difficult or obstructed;

5. When the mask is found to be damaged;

6. When the mask is contaminated.