3 simple ways to distinguish medical mask with bacteria filter and dust filter mask. The structure of the mask includes non-woven fabric and melt-blown antibacterial layer
Melt blown antibacterial layer is the most optimal one for bacterial filtration whose rate is up to 99%.
The first way: Recognition by sound when tugging a mask
When you grasp a piece of cloth, the sound created from this process is very gentle. When you do the same thing with a piece of melt blown antibacterial layer, the sound created from this process is something like a flapping noise. Two different materials will create two different sound.
The second way: checking the white melt blown antibacterial layer on the nose clip of a mask
When looking at the two surfaces of a mask, you can see a white upper layer if your mask contains an antibacterial layer. On the contrary, if you can not see a white upper layer when looking at the two surfaces of a mask. Hence, your mask only includes 3 or 4 layers of non woven-fabric.
The third way: Cut a mask and observe the layers
if there are 3 or 4 layers of non-woven fabric in the mask, your mask is a dust filter mask. if there are both non-woven fabric layer and white melt blown antibacterial layer in the mask, your mask is surely a medical mask with bacterial filter.