Dust mask generally what circumstances need to be replaced with the air quality becomes worse and worse, many people travel will wear , many people wear in detail all don't know is need to be replaced.
So in what cases need to be replaced, disposable masks below small make up is to give users a simple introduction, hope can help to you.
When the masks adsorption of particles is too high, the user feeling distinctly respiratory impairment;
There are parts damage, aging, damage or failure (
Such as head, broken, become loose, nose clip is broken, fall off, the mask body breakage, deformation, etc. )
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Masks contaminated, such as liquid spray, after contact with patients or suspected patients should be replaced immediately.
Different environmental dust concentration, the use time of each person is different, all kinds of let dust amount is different, and the use of different maintenance methods, these will affect the service life of 3 m mask, so there is no way to unified regulation concrete replacement time.
Surgical masks and what's the difference between a is analysed the characteristics of the Labour protection glove of cycling gloves
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