How to distinguish the front and back of disposable medical mask?

In general, the positive and negative differences of medical masks are still large, and the specific differences are as follows: medical masks mainly include medical masks and N95 masks, and the positive and negative differences of medical masks have certain difficulties, especially the masks with the same color on both sides.

Medical masks can be directly distinguished by color. Usually, the color may be dark, which is the front of the mask, that is, the outer layer. Wear it facing out. Disharmony (inner layer) is usually white or light. Secondly, the difference can be achieved by masking the texture. Usually, the inner layer of the mask is soft because it's close to the skin. The outside is usually waterproof and splash proof and hard.

Usually, through the above two methods, we can distinguish the positive and negative of medical masks. Before wearing a medical mask, use soap or disinfectant, hand sanitizer and active water to ensure hand hygiene, and then wear the mask.

There are many kinds of masks on the market, and their names are very similar, such as disposable protective masks, disposable medical masks, medical surgical masks, etc. In addition, there are fake and shoddy products. How can we tell if they are medical masks? When choosing masks, we should pay attention to the manufacturing information of masks and the implementation specifications on the packaging bags to judge whether they are medical masks.

Both medical surgical masks and disposable medical masks need more than 95% bacterial filtration capacity, but the diameter of medical surgical masks is 0.3 μ The filtration capacity of non oily particles is more than 30%, and the fluid resistance of blood, body fluid and other splashes (droplets) can reach 120 mmHg, while disposable medical masks have no such requirement.