(Summary description)The maximum duration of medical surgical masks is 4 hours and need to be replaced after more than 4 hours. After a long time, the mask is blocked by particles, reducing the filtration efficiency of bacteria and increasing our respiratory resistance. Medical protective masks can last for 8 hours and can not be washed after reuse. But medical protective masks must be replaced with blood or saliva.
(Summary description)The maximum duration of medical surgical masks is 4 hours and need to be replaced after more than 4 hours. After a long time, the mask is blocked by particles, reducing the filtration efficiency of bacteria and increasing our respiratory resistance. Medical protective masks can last for 8 hours and can not be washed after reuse. But medical protective masks must be replaced with blood or saliva.
The maximum duration of medical surgical masks is 4 hours and need to be replaced after more than 4 hours. After a long time, the mask is blocked by particles, reducing the filtration efficiency of bacteria and increasing our respiratory resistance. Medical protective masks can last for 8 hours and can not be washed after reuse. But medical protective masks must be replaced with blood or saliva.
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