穷人密封性测试

3m mask fit

哪种口罩戴在你的脸上效果最好?我很有幸地拜访了一个实验室,在那里做了一个非常昂贵的密封性测试。但是我们中很少有人能有机会接触到价值10,000美元的仪器。所以普通大众应该怎么办呢?

 

Mask Fit Test Picture - CN

 

访问3M实验室的时候,我了解到了一种测试方法,我把它称作是“穷人密封性测试”。它的结果不如真正的密封性测试精确,但是可以帮你识别出口罩是不是有较为严重的漏气情况。其实很简单:

#1 戴上口罩。确保上端的金属条紧紧贴合着你的鼻子。

#2 如果口罩是头戴式(有两根皮筋),确保一根皮筋在你的耳朵下方,另一根在上方,像下面这样:

 

maxresdefault

 

#3 用手轻轻固定住口罩,猛吸一口气。吸气的时候,注意是否能感觉到口罩边缘有一股气流或者凉风。特别注意一下鼻子周围的区域。

#4 如果你感觉到有漏气的现象,调整口罩再试一次。如果试过几次之后都不能解决问题,那就得换一个别的口罩了。

 

3m-fitting

 

如果你的口罩没有呼吸阀,你也可以通过这种猛吸气的方式对口罩做个测试。

 

希望能你呼吸到安全的空气!

 

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2 评论
Mona
2020-03-18 1:30 pm

Much more descriptive than the simple graphics on the mask box. Thank you!

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