近日,美國疾病控制和預防中心(Centers for Disease Control and Prevention)再次敦促民眾,即使已經注射了新冠疫苗,在某些環境下仍需佩戴口罩。
那么,N95、KN95口罩和醫用口罩、布口罩之間有什么區別?相比于后兩者,N95和KN95口罩對面部更加貼合。大家都知道,通過在耳圈上打結,可以讓醫用口罩和布口罩更貼合,但N95的密封性本身就很好。
N95口罩以及一些KN95口罩其實是一種呼吸器,可以過濾掉你吸入的大小顆粒。布口罩則主要是為了防止佩戴者排出呼吸道飛沫。
口罩通常是分層的。N95和一些KN95口罩有五層防護,醫用口罩有三個,部分布口罩可能只有一層。
KN95口罩和N95口罩之間又有哪些區別?
由于名字相似,這兩款高過濾口罩讓消費者困惑不已。N95口罩被認為是高規格的口罩,其緊緊貼在臉上,能相當有效地過濾空氣中的顆粒,過濾掉至少95%的非常小的顆粒。
相反,因為不受美國政府部門的監管,KN95口罩未被批準用于醫療場所。美國的KN95口罩大部分是從中國進口。但是,合適的KN95口罩在阻擋病毒方面仍然非常有效,比布口罩和一次性外科口罩更有效。
什么是“NIOSH批準”口罩?要如何確認自己買的口罩確實得到了批準?
自2018年以來,美國國家職業安全與健康研究所(National Institute for Occupational Safety & Health)與美國食品和藥物管理局(Food and Drug Administration)合作,批準了N95口罩。相反,KN95口罩未受監管。獲得批準的制造商名單會改變,所以即使產品上寫著“NIOSH批準”,你也最好將你想買的產品與名單中的制造商進行比較。一些曾經獲得批準的公司的批準已經失效,但也不會及時更新營銷內容。
該組織的網站上有NIOSH批準的N95口罩的全部列表。
N95口罩還短缺嗎?
在疫情開始時,官員們敦促美國民眾不要購買N95口罩,因為即使是衛生健康機構也出現了N95口罩荒。許多零售商當時不再向非醫務人員出售N95口罩。
現在這種短缺已經過去,消費者可以重新購買N95口罩,盡管可能超出他們的需求。亞馬遜等網站已經允許消費者購買口罩以及KN95口罩。(財富中文網)
編譯:楊二一
近日,美國疾病控制和預防中心(Centers for Disease Control and Prevention)再次敦促民眾,即使已經注射了新冠疫苗,在某些環境下仍需佩戴口罩。
那么,N95、KN95口罩和醫用口罩、布口罩之間有什么區別?相比于后兩者,N95和KN95口罩對面部更加貼合。大家都知道,通過在耳圈上打結,可以讓醫用口罩和布口罩更貼合,但N95的密封性本身就很好。
N95口罩以及一些KN95口罩其實是一種呼吸器,可以過濾掉你吸入的大小顆粒。布口罩則主要是為了防止佩戴者排出呼吸道飛沫。
口罩通常是分層的。N95和一些KN95口罩有五層防護,醫用口罩有三個,部分布口罩可能只有一層。
KN95口罩和N95口罩之間又有哪些區別?
由于名字相似,這兩款高過濾口罩讓消費者困惑不已。N95口罩被認為是高規格的口罩,其緊緊貼在臉上,能相當有效地過濾空氣中的顆粒,過濾掉至少95%的非常小的顆粒。
相反,因為不受美國政府部門的監管,KN95口罩未被批準用于醫療場所。美國的KN95口罩大部分是從中國進口。但是,合適的KN95口罩在阻擋病毒方面仍然非常有效,比布口罩和一次性外科口罩更有效。
什么是“NIOSH批準”口罩?要如何確認自己買的口罩確實得到了批準?
自2018年以來,美國國家職業安全與健康研究所(National Institute for Occupational Safety & Health)與美國食品和藥物管理局(Food and Drug Administration)合作,批準了N95口罩。相反,KN95口罩未受監管。獲得批準的制造商名單會改變,所以即使產品上寫著“NIOSH批準”,你也最好將你想買的產品與名單中的制造商進行比較。一些曾經獲得批準的公司的批準已經失效,但也不會及時更新營銷內容。
該組織的網站上有NIOSH批準的N95口罩的全部列表。
N95口罩還短缺嗎?
在疫情開始時,官員們敦促美國民眾不要購買N95口罩,因為即使是衛生健康機構也出現了N95口罩荒。許多零售商當時不再向非醫務人員出售N95口罩。
現在這種短缺已經過去,消費者可以重新購買N95口罩,盡管可能超出他們的需求。亞馬遜等網站已經允許消費者購買口罩以及KN95口罩。(財富中文網)
編譯:楊二一
Well, it was nice while it lasted, but the Centers for Disease Control and Prevention is about to once again urge people—even those who have been vaccinated against COVID-19—to begin wearing masks again in certain circumstances.
What’s the difference between a N95/KN95 mask and a medical or cloth one?
N95 and KN95 masks offer a much closer fit than cloth masks or disposable medical ones. As we’ve learned, it’s possible to make medical and cloth masks fit better by tying knots in the ear loops, but an N95 will always have a bigger seal.
N95s (and some KN95s) are a type of respirator, filtering out both larger and smaller particles you inhale. Cloth masks, though, are largely meant to prevent the wearer from expelling respiratory droplets.
It often comes down to layers. N95 and some KN95 masks have five layers of protection. A medical mask has three. And some cloth ones only have one.
What’s the difference between KN95 and N95 masks?
With similar names, these two higher-filtration masks have resulted in a lot of consumer confusion. N95 masks are considered the high-bar of face coverings. They fit snugly on the face and are especially effective in filtrating airborne particles, filtering out at least 95% of very small particles.
KN95 masks aren’t approved for use in medical settings, as they’re not regulated by U.S. officials. They’re largely imported from China. But a well-fitted KN95 mask is still extremely effective in stopping the virus, moreso than a cloth or disposable surgical mask.
What is a NIOSH-approved mask—and how can I verify the one I’m buying really is approved?
The National Institute for Occupational Safety & Health, since 2018, has worked with the Food and Drug Administration to approve N95 respirators. (KN95 masks are not regulated.) The list of approved manufacturers changes, so it’s always wise to compare what you’re thinking of buying to the list—even if the sales listing says “NIOSH approved.” Some companies that were once approved no longer are, but they haven’t updated their marketing.
Find the extensive list of NIOSH-approved N95 masks at the organization’s website.
Is there still a shortage of N95 masks?
At the start of the pandemic, officials urged Americans to not buy N95 masks, as there was an insufficient number for even healthc are officials. Many retailers would no longer sell them to non-medical personnel.
That shortage has passed, and consumers can once again purchase N95 masks, though it might be more than they need. Amazon and other sites, however, are once again allowing consumers to buy them (and KN95 masks).