What masks are recommended?

Masks with a filtration efficiency of non-oily particles ≥95% , including medical protective masks, N95, KN95, etc., can effectively block the spread of virus droplets and are recommended . Among them, medical protective masks have the function of blocking blood, body fluids and splashes. (KN90 filtration efficiency ≥90%, slightly worse than KN95, and can also play a certain protective effect)

▲ Medical surgical mask (YY0469-2011 standard) non-oily particle filtration efficiency ≥30%, bacterial filtration efficiency ≥95%, has the function of blocking blood, body fluids, splashes, and can also play a better protective effect, it is recommended to use .

Disposable medical masks (Standard YY / T0969-2013) only require bacterial filtration efficiency ≥95%. There is no requirement for particle filtration efficiency and liquid barrier, and the protective effect is limited. Considering that the two types of masks on the front may not be easy to buy now, disposable medical masks can also be used in places where there are not many people .

The appearance of disposable medical masks is similar to that of medical surgical masks, which should be distinguished (see the name and standard) .

If none of the above are available, buy a general medical mask starting with YZB .

All masks have a certain effect, and wearing a mask must prevent viruses more than not.

For the daily blocking of droplets, the protective effect is roughly ranked as follows: medical protective mask level 3 (≈N100≈KN100)> medical protective mask level 2 (≈N99)> medical protective mask level 1 (≈N95≈KN95)> KN90> medical surgery Masks> Disposable medical masks / other medical masks

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