The most effective function of masks is to prevent and control the spread of serious respiratory diseases, such as SARS or influenza and the outbreak of novel coronavirus. You can choose masks marked with KN95, N95, FFP2 and above standards.
2. Research shows that surgical masks are not worse than N95 masks in preventing influenza within a predetermined range. Zhong Nanshan, head of the senior expert group of the National Health Commission to fight against SARS, also said: "Actually, it is unnecessary to wear N95 masks. General masks can prevent most droplets with viruses from entering the respiratory tract. It is still useful to wear a mask to prevent novel coronavirus. " So if you can't buy N95 mask, it's ok to choose general surgical mask.
At present, there are many kinds of masks on the market, with the words "medical, protective, etc.". It's all written on the product name, which may not have descriptive effect. So how do we judge? Whether it is a medical protective mask or a surgical mask, ordinary medical masks belong to medical devices and are included in the management of medical devices. The production and management of medical devices in China are quite strict. Therefore, if possible, try to choose masks with mechanical brand name, medical device production license and medical device product registration certificate.
In addition, some masks in the market implement GB/T 326 10 standard, which is the first national standard for civil protective masks. Used to filter the air entering the nose and mouth and prevent harmful gases, smells and droplets from entering and leaving the wearer's nose and mouth. Mainly divided into cotton masks, non-woven mask, polymer masks, activated carbon powder filter masks and activated carbon fiber pad masks. Masks that implement civil standards do not belong to the medical category, but they also have certain protective effects. If you really can't buy mechanical products, you can also consider buying this.
4. Pay attention to the implementation standards of masks when purchasing. Different implementation standards have different protection effects, so don't just pay attention to the product name. If the packaging standard is YY 0469-20 1 1, this kind of mask is a medical surgical mask, and its protective effect will be higher than that of the general medical mask that implements the relevant registered product standard (YZB).
5.5 There are two kinds. KN95/N95 masks, one is an anti-biological mask and the other is a dust mask.
They have the same protection level, but the implementation standards are different. The standard of biological mask (medical KN95) is GB 19083-20 10 "Technical Requirements for Medical Protective Masks", which is used in medical and health industries, such as epidemic prevention stations, hospitals, CDC and so on. The implementation standard of dust mask (KN95) is GB2626-2006 "Breathing Protective Articles Self-suction Filter Anti-particulate Respirator", which is used in industries, such as coal mines, petroleum processing, mines and other industrial and mining enterprises.
If individuals use it in ordinary environment, they can choose KN95 (American standard N95) mask. If medical institutions or contact infected people need to prevent droplet infection caused by splashes of patients' body fluids or blood, they must use KN95 masks with GB 19083-20 10 standard.
To sum up, in a relatively high-risk environment, the masks that can effectively prevent respiratory infectious diseases are medical protective masks and medical surgical masks. Medical protective mask, i.e. medical KN95, is suitable for medical staff in fever clinic, isolation ward and transfer of confirmed patients. Medical surgical masks are suitable for suspected cases and are worn by drivers, taxis, drivers, sanitation workers and service personnel in public places.
These two kinds of masks belong to medical devices, so it is best to buy them if possible. How to distinguish these two kinds of masks? According to the following process:
Look at the registration number of medical devices-make sure they are medical devices, and look at the implementation standards-implement GB 19083-20 10 Technical Requirements for Medical Protective Masks, that is, KN95 Medical Protective Masks-implement YY 0469-20 165438 Technical Requirements for Medical Surgical Masks.
In general, you can choose to implement the standard of KN95/N95 (KN in China and N in the United States) or above in GB2626-2006/NIOSH 42CFR-84, which is suitable for on-site debugging, sampling and testing personnel, and the public can also wear it in places with high personnel density or closed public places.
Disposable medical masks that meet YY/T 0969-20 13 standards can be used in public places where people are not crowded. Similarly, disposable medical masks belong to medical devices. When purchasing, you should also identify the registration number of the medical device on the package-make sure it is a medical device, depending on the implementation standard-and implement YY/T 0969-20 13 disposable medical mask, that is, disposable medical mask.
In addition, there are some mask products with medical device registration number on the package, but without YY/T 0969-20 13 standard, which also belong to medical devices. Strictly speaking, the name usually shows "disposable mask".