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A comment on Austria to make basic face masks compulsory in supermarkets. Parent comment

Re:Austria to make basic face masks compulsory in supermarkets by gruez on Monday March 30, 2020 @08:55AM (#22727629)
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Re:Austria to make basic face masks compulsory in supermarkets by xkapastel on Monday March 30, 2020 @09:23AM (#22727794)
The virus is generally contained within a much larger droplet that is expelled when a person speaks, coughs, or sneezes. So the 120nm number is not necessarily relevant.
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Re:Austria to make basic face masks compulsory in supermarkets by mcsb4 on Monday March 30, 2020 @09:30AM (#22727840)
As I wrote:

Bacteriophage MS2 - 23nm :

Surgical mask 89.52% filtering

Tea towel one layer 72.46% filtering

-> Thus still ~70% filtering of 23nm particles for the one layered towel. They didn't put the number for a two layered towel in there, I wonder if it did beat the surgical mask.

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Re:Austria to make basic face masks compulsory in supermarkets by gruez on Monday March 30, 2020 @10:05AM (#22728107)
>As I wrote:

>Bacteriophage MS2 - 23nm :

oops, misread the units!

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