Replacement of masks
Release time:
2024-04-22
Dust filter cotton, in the mask and the user's face close to the case, when the user feels that the respiratory resistance is very large, indicating that the filter cotton has been covered with dust particles, should be replaced with a new mask.
1. The mask is contaminated such as blood stains or droplets and other foreign bodies.
2. The user feels that the breathing resistance increases.
3. The mask is damaged.
4. dust filter cotton, in the case of the mask and the user's face close to good, when the user feels that the respiratory resistance is very large, indicating that the filter cotton has been covered with dust particles, should be replaced with a new mask.
5. Gas filter box, in the case of good facial mask and the user, when the user smells the smell of poison, it should be replaced.
6. ordinary mask wear: activated carbon masks can generally be used for 2 days, n95 can be used for a week. If the mask is not worn for a long time after cleaning, it is better to clean it again before wearing it.
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