Premium Only Content

Mask Science #3 - Masks let up to 90% of particles through
Learn more at: http://www.HealthScienceTruth.com
Cloth masks and other fabric materials tested in the study had 40-90% instantaneous penetration levels against polydisperse NaCl aerosols.
To address the filtration performance of common fabric materials against nano-size particles including viruses, five major categories of fabric materials including sweatshirts, T-shirts, towels, scarves, and cloth masks were tested for polydisperse and monodisperse aerosols (20-1000 nm) at two different face velocities (5.5 and 16.5 cm s⁻¹) and compared with the penetration levels for N95 respirator filter media. The results showed that cloth masks and other fabric materials tested in the study had 40-90% instantaneous penetration levels against polydisperse NaCl aerosols employed in the National Institute for Occupational Safety and Health particulate respirator test protocol at 5.5 cm s⁻¹.
The penetration values obtained for common fabric materials indicate that only marginal respiratory protection can be expected for submicron particles taking into consideration face seal leakage.
https://www.greenmedinfo.com/article/cloth-masks-and-other-fabric-materials-tested-study-had-40-90-instantaneous-pe
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7314261/
-
LIVE
Donald Trump Jr.
4 hours agoDems' Meme Meltdown, Plus why California Fire Victims should be more Outraged than Ever | TRIGGERED Ep.279
3,791 watching -
UPCOMING
BonginoReport
1 hour agoTerror Strikes Manchester Again - Nightly Scroll w/ Hayley Caronia (Ep.147)
3.3K1 -
2:05:44
Redacted News
2 hours agoHIGH ALERT! US AND ISRAEL SPEEDING TOWARD WAR WITH IRAN, INFLUENCERS BEING PAID $7,000 PER POST
75.4K38 -
LIVE
TheCrucible
1 hour agoThe Extravaganza! EP: 47 with guest host MadeByJimbob (10/02/25)
1,567 watching -
LIVE
Kim Iversen
1 hour agoAMERICA HUMILIATED: U.S. Generals Obey Israeli Demands And Hasbara Floods Social Media
1,440 watching -
LIVE
Dr Disrespect
7 hours ago🔴LIVE - DR DISRESPECT - BLACK OPS 7 MULTIPLAYER GAMEPLAY - NEW!
1,274 watching -
LIVE
MattMorseTV
1 hour ago🔴CHILLING + TALKING🔴
281 watching -
1:26:12
Steven Crowder
8 hours agoThe Left is Violent (Part 2) | Change My Mind
384K645 -
2:11:35
Pop Culture Crisis
3 hours agoElon Declares 'CANCEL NETFLIX' Trump Threatens Hollywood, Bad Bunny Superbowl Boycott? | Ep. 927
9.36K1 -
3:26:05
Barry Cunningham
4 hours agoPRESIDENT TRUMP IS READY TO GO SCORCHED EARTH! SHUTDOWN DAY 2 BRIEFING!
17.5K20