1. Implementation standards
To choose a mask to prevent PM2.5, you must first observe the packaging and product body to see if there is a clear and recognized mask implementation standard (different from country to country), such as "N95", "FFP1" and so on.
2. Mask brand
Choosing a branded product not only has detailed and rigorous descriptions of the protection objects, filtering effects and implementation standards, which makes people feel at ease, but also relatively speaking, the products are more complete. The anti-particulate mask covers a variety of specifications, functions and sizes, and there is room for people to choose. Very big.
3. Use environment
Anti-particulate masks have many functional characteristics. First look at the environment in which they are used. If the environmental pollution is mainly non-oily particulate matter, use N95.
4. With or without breathing valve
See if you need a cold-flow breathing valve. A mask with a cold-flow breathing valve can quickly release the exhaled heat and effectively reduce the face temperature. If you need to wear the mask for a long time, it will be more comfortable to use the breathing valve, but the price will be more expensive.
5. Style and size
The non-foldable mask is a three-dimensional cup type, which is inconvenient to carry when going out. The foldable mask is relatively more hygienic and convenient. Protective masks come in different sizes. People with small or large faces may be more likely to fit the mask. Children should choose special ones.