No matter where you are, the air is everywhere, and you can't live without it. When the weather is good, take a deep breath, it is a pleasure. Every smog is sinful when the sun is foggy. Therefore, masks are an indispensable choice. As a mask brand that most people will choose - 3m, what is the effect? Can a 3m mask prevent pm2.5?
    At present, 3m masks on the market are sold everywhere, and most of the sellers are marked with anti-smog marks. So how do we know that 3m masks can protect against pm2.5?
We must first know the degree of protection of the 3m mask to determine whether the 3m mask can prevent pm2.5.
    Here we should first understand the meaning and standard of these 3m dust mask types: N95 mask filter non-oily particulate matter efficiency is greater than 95%; N100 mask filter non-oily particulate matter efficiency is greater than 99.9%; R95 mask and P95 mask can filter non-oily and oily The efficiency of the particles is more than 95%, but the R95 mask is used for about one day, the P95 mask is used for about one week; the KN90 mask filters the non-oily particulates with an efficiency of about 90%; while the FFP2 mask and the FFP3 mask for filtering non-oily particulates are divided into 94%, 99%.
    Because PM2.5 dust particles generally mean oily and non-oily particulate matter, it is recommended that you use R series or P series dust masks. This type of 3m mask is better for PM2.5.
    The above is a simple answer to the question that 3m mask can prevent pm2.5, I hope you can help you with doubts.
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