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.
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.