KN 95 මාස්ක් දාන අය ළඟටවත් යන්න එපා

[hasithayad]

joke ekata nemei kiwwe. inhale karanakota mask eka athulata air enne filter(fabric) eka haraha. exhale karanakota air mask eken eliyata yanna valve eka haraha.
valve ekak nathi n95 danna puluwannam anith ayage arakshawata hodai. habai godak wela dan inna amarui. one-way valve eka hariyata wada wune naththam inhale karanakota valve eka harahama air enna puluwan.

hari hari machan, danui therune. thanks

 

[imhotep]

They were measuring the KN95 masks against their own N95 standard right? From what I read, they are 2 different standards with similarities.

There are different standards around the world but they are similar...
N95 (United States NIOSH-42CFR84)
FFP2 (Europe EN 149-2001)
KN95 (China GB2626-2006)
P2 (Australia/New Zealand AS/NZA 1716:2012)
Korea 1st class (Korea KMOEL - 2017-64)
DS2 (Japan JMHLW-Notification 214, 2018)
PFF2 (ABNT/NBR 13.698-2011 – Brazil)

In the US if you check the NIOSH approved list you will find the details. The 70% failure was because of it didn't really filter 95% of the 0.3 micron particles as supposed. It failed the tests...

 

[හෙනයා]

https://wwwnc.cdc.gov/travel/notices/covid-4/coronavirus-sri-lanka