When do I need to change my mask?
2-layer mask: non-woven fabric, bridge of nose, ear hook. 3-layer mask: non-woven fabric, bridge of nose, ear hook, filter paper. Activated carbon mask: non-woven fabric, bridge of nose, ear hook, filter paper, activated carbon filter paper.
The mask should be replaced in time if the following situations occur: the mask is damaged or damaged; the mask is contaminated (such as blood stains or droplets and other foreign objects); it has been used in an isolation ward or in contact with patients; the mask is damp; there is a peculiar smell in the mask; respiratory resistance Significant increase; the mask cannot be closely attached to the face.
1. The mask is contaminated, such as blood stains or droplets and other foreign objects.
2. The user feels that the breathing resistance becomes greater.
3. The mask is damaged.
4. Dust-proof filter cotton. When the mask is in good contact with the user’s face, when the user feels that the breathing resistance is great, it means that the filter cotton is already covered with dust particles and should be replaced with a new mask.
5. The anti-virus filter box, when the mask is in good contact with the user’s face, when the user smells toxic substances, it should be replaced with a new one.
6. Ordinary mask wearing: activated carbon mask can generally be used for 2 days, n95 can be used for one week. If the mask has not been worn for a long time after cleaning, it is better to re-clean it before wearing it.
