新冠疫情发展至今，#口罩#已然成为“手机、钱包、钥匙”以外的，出门必备单品。而一次性医用外科口罩，是当下更方便获取、价格适中、舒适透气、还能“应付”保安和管理员们严防查看的最佳选择。
医用口罩的结构：有几层呢？
医用口罩最常见的是三层构成的：
- 最外层的防水层：一般情况下，有颜色的那一层（通常是蓝色或者绿色）主要是防止细菌和病毒吸附在口罩上面，是第一道防线。
- 高效过滤性的中层：中层是隔离过滤那些遗留的细菌、病毒，从而确保我们的安全。
- 吸收内层：最内层是捕捉并吸附从我们口中喷出的唾液，防止我们自己携带的病毒传播出去。
我该如何正确佩戴口罩？
第一点，检查一下口罩包装上有没有说明书，如果没有，就请遵照下面几条去佩戴。
1.检查口罩的颜色
通常情况下，最外层是有颜色的。请确保佩戴的时候，颜色面朝外。同时，如果外层被污染或者起了毛球，请及时更换。注：有颜色朝外！
2.用手去感受口罩正反两面
如果你的医用口罩正反两面颜色相同，就像这个?一样，
我们就需要通过触感辨别口罩正反面。
内层（贴合面部）通常更加柔软细腻，而外层会比较粗糙一点。
请不要用口罩套耳绳来辨别佩戴方向
很多人会用套耳绳的位置分辨口罩正反，乍一听感觉还挺有道理的，但这个方法既不正确，也不科学。千万不要效仿！这并不能作为判断标准。Smart Air检查了五个不同厂家的医用口罩，发现只有一个口罩的套耳绳与口罩外侧相连接，其余四个均在内侧。
佩戴医用口罩的步骤
- 对于有套耳绳的口罩来说，先拿起口罩对准自己的耳朵。
- 撑起口罩，分别挂在双耳，确保口罩遮住鼻子、嘴巴还有下颚。
- 将口罩顶部的金属片在鼻梁上方捏成型。医用口罩应紧贴面部放置。
- 佩戴口罩后，避免触摸口罩。如果有，事后要洗手。
- 取下口罩后，立即弃置于有盖垃圾桶内，并立即洗手。
- 及时更换医用外科口罩。一般来说，外科口罩不应重复使用。如果口罩有破损，应立即更换新的口罩。
口罩佩戴的正反方向会不会影响颗粒物的捕捉效率？
如果我们用错的方式佩戴口罩，到底会不会影响我们的颗粒捕捉效率呢？
更多知识：口罩的佩戴方向是否会影响颗粒捕捉效率？
总结：我们究竟该如何佩戴口罩
由于最外层的方向对病毒有重要的排斥作用，因此可以实现更好的过滤效果。
我们需要先判断哪边是最外层。如果你的外科口罩有说明（通常在口罩的包装上），你可以按照他的说明去做。如果他们没有任何指示，一定要弄清楚哪边是外层。
然后，您可以按照我们的步骤小心地戴上口罩。
I still see blue surgical masks white side out
Why did it have to be a whole article to say what color needs to be on the outside. Could have just gone to the point
As the article explains, unfortunately color can’t be used in every circumstance to tell which way round the mask goes! This article covers other important scenarios which we couldn’t leave out. Having said that, we’ve just added a video to the start of this article which explains everything you need to know in just over 2 minutes!
The way I was taught: the pleats face up on the inside. With the nose wire up, the pleats on the inside face up to help catch the spittle etc, and the pleats on the outside will face down to help shed outside contaminates.
Thank you! Excellent info, and well presented. We regular folk don’t necessarily know this stuff…but I guess we all need to know now.
Everyone should be aware that the lungs are much like the dust bag of a vacuum cleaner. The problem is that you are stuck with it for life and cannot replace it if it gets filled with dust. Once airborne minute and mostly invisible particulates get into them, they stay in your lungs forever and can cause all kinds of serious diseases including cancer even decades down the road. Many people ignore the harm, as it is invisible and not immediate, kind of out of sight, out of mind. Young kids and people should especially be cautious of this. It won’t be a bad idea to wear an appropriate mask whenever you’re exposed to a dusty environment or workplace, even only momentarily. Don’t neglect the preciousness of your lungs. This is just my unqualified opinion.
Your description is confusing. Your saying the rough or white side should be worn out and the soft or blue side in…but the masks I have are considered surgical, and the soft side IS the blue side. If I had to wear this mask more than a few minutes at a time, the white side would be very irritating. Maybe the batch I purchased was made incorrectly – either way, the percentage of particles captured wearing it incorrectly isn’t enough to make me be uncomfortable…and I am no surgeon so there is that, too.
The pleats are another clue. Imagine you are doing surgery, and your patient springs a leak and sprays bodily fluid at your mask. You want the pleats facing in the right direction so that the fluid won’t pool up inside them. If the mask also has a nose bridge wire, then the wire obviously goes over your nose, and that together with the pleats leaves only one possible way to wear the mask.
So Chris are the pleats to be going down on the outside ?
The seam for the bands are like a tag in your clothes they should be on inside not outside!
Very confusing for people with common sense.
Hi Faye, Song here.
You are right. It is confusing. That could be another possible reason that we do not suggest to use the seam as an indication of which way to wear a surgical mask.