3M N95型口罩 8210/9010/8210V/9010V 分別/氣密測試教學
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想問一問3M啲n95 product 不論係for medical or industrial use 係咪都有做BFE同PFE test
https://www.ph.ucla.edu/epi/bioter/n95masks.html
“The N95 is made by various manufacturers under different names, from MSA's "Affinity Foldable Respirator" to 3M's "Particulate Respirator." Look for "NIOSH N95" on the package; the "N95" is a government efficiency rating that means the mask blocks about 95 percent of particles that are 0.3 microns in size or larger.”
https://www.nelsonlabs.com/testing/respirator-pre-certification-tests-niosh/
“Test articles are challenged with particles of the most penetrating particle size range, 0.3 µm.”
就咁睇8字頭嘅n95得NIOSH認證，過濾到嘅particle size 係 0.3 um，唔夠防wars，重要有啲係冇防水功能
有錯請指正
“The N95 is made by various manufacturers under different names, from MSA's "Affinity Foldable Respirator" to 3M's "Particulate Respirator." Look for "NIOSH N95" on the package; the "N95" is a government efficiency rating that means the mask blocks about 95 percent of particles that are 0.3 microns in size or larger.”
https://www.nelsonlabs.com/testing/respirator-pre-certification-tests-niosh/
“Test articles are challenged with particles of the most penetrating particle size range, 0.3 µm.”
就咁睇8字頭嘅n95得NIOSH認證，過濾到嘅particle size 係 0.3 um，唔夠防wars，重要有啲係冇防水功能
有錯請指正
3M 1860 有冇用?
總之大過0.3微米都過濾到。事實上好少病毒係直接空氣傳播，大部分都靠媒介例如口水同塵等等，所以一般n95都ok
有，只要唔係面對面打乞嗤同噴算，其同 medical n95一樣