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Knowledge of Mask
2020-02-27
N series is American standard,
KN series is Chinese standard,
The FFP series is a European standard,
The higher the number, the higher the protection level.
It is easier to understand with a formula:
FFP3 ＞ FFP2 = N95 = KN95 ＞ KN90
A V at the end of the number indicates a valve.
All 95 starts with the N95 series.
The 90 series also works. The 90 series does not have a high degree of protection of 95, but it can also resist more than 90%, which is much better than ordinary masks.
In general, to resist viruses and flu, the N95 series is sufficient
In view of the confusion of the choice of masks, I am afraid that donating the wrong one will not be used, here are some different standards for masks. The mask model and execution standard are printed on the left side of the mask. You can choose a mask according to this.
1, masks are divided into three standards:
n95 is produced according to the American standard NOISH, the manufacturers are 3M and Honeywell;
FFP2 is the European standard EN149;
KN95 is the Chinese standard GB2626-2006.
All three types of masks with the standards printed on them are qualified masks.
2, medical n95 masks need to prevent high-pressure liquid from splashing, so higher standards than ordinary n95; taking 3M as an example, models 1860 and 9132 are the most commonly used medical protective masks.
In addition, there are 1860s for children. Ordinary people or medical personnel who are not exposed to high-pressure liquid spray can choose ordinary n95 masks that meet the NOISH standard.
3. European manufacturers of FFP2 standard masks include German UVEX, etc .; FFP3 is a higher level (99) protective mask.
4, the Chinese standard GB2626-2006 refers to the standard of ordinary KN95 masks.
The medical KN95 mask standard is GB19083-2010.
(Similarly, ordinary people and medical personnel who are not exposed to high-pressure liquid spray can use ordinary KN95 masks.)
5. Another common question is, do you choose a mask with or without a valve? Ordinary valve masks are more comfortable.
Medical masks are not allowed to have valves.
When ordinary people are infected or suspected to be infected, a medical mask without a valve must be selected.
6, medical surgical masks, the common standard is YY0469-2010, or YY0469-2011, it is printed on the individual outer packaging of each mask.
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