Are white masks medical masks? How to distinguish the front and back of white disposable masks?

During the epidemic, some netizens bought masks from Japanese purchasing agents or other platforms that were actually white? Masks with both sides white make many people unable to distinguish the front and back. Are these disposable white masks medical masks? Can they contain the new coronavirus? Next, let's take a look at how to distinguish the front and back of the white disposable masks provided by this site.

Is the white mask a medical mask?

Yes, there are white medical masks on the market, but most of them are blue, because for non-woven materials, light blue is the easiest to color, and relatively less chemical ingredients are added. As long as it is a regular mask, any color is fine. Pay attention to wearing the mask properly, replace it in time after returning home, dispose of the replaced mask correctly, wash your hands frequently, ventilate frequently, and drink more boiled water.

How to distinguish the front and back of white disposable masks

The distinction between the outside and inside of the same color mask is summarized as follows, in order of priority:

1. Whether the mask has a LOGO. The LOGO should be written correctly facing outwards, usually in the upper right corner (when facing the mask);

2. The metal strip is on the top, there is no doubt about that. Look at the number of layers where the metal strip is located. The single-layer side faces outwards, and the double-layer side faces inwards (the metal strip can be clearly seen on the single-layer side, and the fewer layers are also the reason for the bulge, but I personally think that it is not very intuitive and rigorous to only write about the bulge in the description). It also conforms to the wearing experience;

3. Don’t judge based on the thread ends or fold direction, as each manufacturer is different. As shown in the following figure: the thread ends and fold directions of two-color masks are also different.

Personally, I think you can check and confirm whether the two-color mask meets the requirements according to Article 2, and use this to judge the outside and inside of the mask of the same color. Those who are interested can verify it. I hope it will be helpful.

Can white masks protect against the new coronavirus?

There are many types of masks, but their effectiveness has no direct relationship with the color of the mask. The most important thing is to look at the structure and function of the mask and the types and sizes of particles that can be filtered.

Disposable medical masks or ordinary disposable masks on the market can play a role of isolation. They can not only prevent droplets transmitted by foreigners during contact with people, but also reduce the amount and spray speed of their own droplets. They are good protection tools for both oneself and others.

Usually, masks are divided into three layers from the inside to the outside: water absorption layer, filter layer and waterproof layer, which filter the inhaled and exhaled air through different functions. When wearing, you should pay attention to the waterproof layer facing outwards, which is mostly a darker layer. Of course, many masks are white. Then put the metal strip on the bridge of the nose to fit the mask to the face according to the shape of the nose bridge to prevent air from entering the gap and being inhaled into the human body, ensuring that the mask fits tightly to the face and does not leak.

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The maximum sentence is life imprisonment! The specific circumstances are as follows ☟ Reminder to producers and operators: Don't violate the legal red line because of greed and regret it for life; consumers need to be vigilant and pay attention to the news of medical supplies from formal channels. If you find "fake", "three no", "sky-high" and other problem masks, report them to the relevant departments in time to prevent more problem masks that do not meet national standards from entering the market.