Homemade protective mask, make your mask step by step: Face mask by Hall Antony

Author:Hall, Antony [Hall, Antony]
Language: eng
Format: epub
Published: 2020-03-27T16:00:00+00:00

generally use 4 hours to change, if the ordinary people out, apply for a short period, you can use several times more.

In general, after 8 hours of use of the disposable medical surgical mask, PEF (particle filtration efficiency) decreased from 99% to 96% and respiratory resistance increased to 33Pa 42Pa. If the mask is used for a long time, you can not effectively filter out viruses and bacteria, resulting in natural infection. So how should we extend the use of effective disposable masks in this extraordinary period of the epidemic?

3.1.1 preservation masks Method

Once the mask is used for a short period, it needs to be used again; it can be hung in a clean, dry, ventilated, or a bag of fresh, breathable paper. The masks must be stored separately to avoid contact with each other and identify users of the cover.

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