How to choose an anti-smog (PM2.5) mask that suits you?

Many people may hold different opinions on how to choose anti-smog or even the N95 masks, here below are some suggestions for you:

1. Flat masks cannot prevent smog.

The double layer may not be able to prevent saliva.

Three layers, the middle is determined to be melt blown filter material, and then divided into ordinary masks, medical, surgical, etc.

The above can not prevent smog and PM2.5.

2. Cotton masks can’t be changed to filter type.

 

What does the anti-smog mask look like?

The appearance is at least folded or three-dimensional.

Regardless of what the merchant told you, how many layers, 3 layers, 4 layers, 5 layers, and 6 layers of their masks?

What is necessary is that the intermediate filter material is at least a melt blown electrostatic filter material above N90 level.

Filter materials above N90 are N95, N100, etc.