Let’s stay safe from the Corona 19. If there’s no mask available, let’s make one!

Cotton masks with a manually added filter were as effective as government-certified masks in blocking particles of human saliva, research by the Seoul Research Institute of Public Health and Environment showed today.


The average particle collection efficiency of cotton masks with electrostatic filter cotton attached inside was found to be 80 to 95%(Handmade), while government-certified KF 80 masks measured at over 80 percent, according to the Institution. The efficiency of dental masks came to 66 to 70 percent, while the efficiency of cotton masks without a filter dropped to 16 to 22 percent, it added.


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corona 19 mask

“It looks like plain cotton masks are effective when blocking large droplets (over 3 square micrometers). But for complete prevention it would be preferable to use them after adding electrostatic filter cotton inside,” Seoul Research Institute of Public Health and Environment said.

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Amid a shortage in supply and the ridiculous rise of mask prices, handmade filter-added masks that are washable and more affordable have become a practical option for many Koreans.

corona 19

The public health institute said that the handmade masks need to be washed thoroughly and the electrostatic filter cotton to be replaced after use in order to maintain their particle prevention capacity.

Source: The Korea Herald

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