My N95 respirator has an exhalation valve, is that okay?
My N95 respirator has an exhalation valve, is that okay? An N95 respirator with an exhalation valve does provide the same level of protection to the wearer as one that does not have a valve. The presence of an exhalation valve reduces exhalation resistance, which makes it easier to breathe (exhale). Some users feel that a respirator with an exhalation valve keeps the face cooler and reduces moisture build up inside the facepiece. However, respirators with exhalation valves should not be used in situations where a sterile field must be maintained (e.g., during an invasive procedure in an operating or procedure room) because the exhalation valve allows unfiltered exhaled air to escape into the sterile field.
先声明我不是医生，也不是生物或病毒学家，只是从材料上说一下。
1。 AIRBORNE 的克若纳病毒，本身大概在几百个纳米。但病毒一般要靠载体传播，
加上载体，大概就在几个微米左右。
2。 BOUNTY TOWEL 一层的缝隙， 我目测了一下，长度则几十个微米，宽度几个微
米。这样四层迭加，缝隙也就大则几个微米，有可能更小。 如果八层迭加缝隙就
在微米一下，挡住估计超过99%的病毒。 所以其实非常可行。
3。 问题是这种是纸，有微米级的TISSUE 在表面 吸入人体，总是不卫生。
但解决的办法很简单，给八层的口罩喷些过滤水，保持口罩湿润，这样纸的TISSUE就
不会被吸入人体了。不要忘记你在亚马逊买的N95，大部分都不是医用口罩，一样不
干净。
4。 外层喷一些酒精。我尝试了一下，喷了一点酒精和抹了层SANITIZER，发现70%的
酒精并不刺鼻，但SANITIZER太刺鼻了，可以用度数更低的酒精。或不用也行。
5。 真有病毒大流行，有好的医用口罩最好，没有的话，自己这么凑合，出门买东
西也令人放心。长时间出门，就左手喷水，右手喷酒精，坚持回家没问题。
哈哈哈
我眼花了，大字儿都看不清。。。
所以看微米级的没问题。lol
lol
不可想象会到那个地步。
人类一定有办法的
周围人人，左手酒精，右手是水，往自己脸上狂喷。。。
不过连大农村都买不到普通医用口罩了，这法到时没准儿真能用上。
My N95 respirator has an exhalation valve, is that okay? An N95 respirator with an exhalation valve does provide the same level of protection to the wearer as one that does not have a valve. The presence of an exhalation valve reduces exhalation resistance, which makes it easier to breathe (exhale). Some users feel that a respirator with an exhalation valve keeps the face cooler and reduces moisture build up inside the facepiece. However, respirators with exhalation valves should not be used in situations where a sterile field must be maintained (e.g., during an invasive procedure in an operating or procedure room) because the exhalation valve allows unfiltered exhaled air to escape into the sterile field.
https://www.cdc.gov/coronavirus/2019-ncov/hcp/respirator-use-faq.html
但我看了看我的口罩，无老化现象。室温一般不会
刚从Costco囤货回来了 ：）
https://www.cdc.gov/coronavirus/2019-ncov/hcp/respirator-use-faq.html
没找到胡萝卜，龙口粉丝 ：（
羊肉牛肉鱼鸭，地下室冰柜里还有
各种豆米，家里常备
别浪费大家的时间了。