Disposable medical masks are the most common type of ma […]
Disposable medical masks are the most common type of masks. We usually see that many people wear disposable medical masks. Disposable medical masks are divided into type a and type b. There is a difference between type A and type B. of.
What is the difference between type A and type B of China disposable medical masks
The protection levels of disposable medical masks type A and B are different.
The protective effect levels of masks are from high to low, and are divided into four levels, A, B, C, and D. Different levels of masks have different protective effects and applicable environments. Class A protective masks are suitable for extremely polluted environments. The protective effect is the best among these. It can block more than 90% of the particles, and so on.
Classification of mask protection level
The protective effect of masks is divided into four levels: A, B, C, and D from high to low. Grade A is the best and Grade D is the worst.
1. Class A, corresponding to serious pollution, used when the PM2.5 concentration is ≤500μg/m3.
2. Class B, corresponding to serious pollution and below, used when PM2.5 concentration is less than 350μg/m3.
3. Class C, corresponding to severe pollution and below, used when PM2.5 concentration ≤250μg/m3.
4. Class D, corresponding to moderate and below pollution, used when the PM2.5 concentration is less than or equal to 150μg/m3.
Disposable medical mask type a and type b which is better
A type is good.
Type a has the best protection effect, and the A-level respirator with the highest protection level is suitable for use in extremely polluted environments. At the same time, it has the best protection effect and can block more than 90% of particles.
What is the difference between type a and type b of disposable medical masks?
Can medical masks prevent viruses?
Medical masks are anti-virus.
China medical masks are mainly divided into three types, the medical protective masks with the highest level of protection, the medical surgical masks commonly used in operating rooms, and the ordinary-level disposable medical masks. These three types of masks have anti-virus effects. Medical protective masks have the best protective effect, can filter particles in the air, and are commonly used personal protective equipment for spreading diseases.