KN95 Mask_Weilihua Biotechnology Co., Ltd.

Due to different workplaces, people can be divided into two categories: oily and non-oily. The "KN" type masks are mainly used to protect non-oily particles, and the "KP" type masks can protect oily particles. It can also protect non-oily particles. For example, the chemical industry is more exposed to oily particles (such as paraffin oil steam, etc.). Generally, KP masks are used. Other industries, including ordinary civilians, use KN masks. (Of course, there are also some civilian mists.) Haze masks can use KP type masks).

According to the GB2626 standard requirements, the KN masks are again classified according to their filtering performance for non-oily particles, and everyone has become familiar with the KN90, KN95 and KN100 masks. Among them, KN95 masks have a filtering performance of more than 95% for non-oily particles (detected with sodium chloride), which is one of the most common masks. See the table below for details

Type and level of filter element	Detection with sodium chloride particles	Detection with oil particles
KN90	≥90.0％	Not applicable
KN95	≥95.0％
KN100	≥99.97％
KP90	Not applicable	≥90.0％
KP95		≥95.0％
KP100		≥99.97％

Seeing this, I don't know if you have found a problem. Just now, I have already told you that medical surgical masks (YY0469-2011) require that the filtering performance of non-oily particles is ≥30%, which is ≥95% than that of KN95 masks. The requirements are much lower, so many people naturally think: KN masks, especially KN95 masks, are definitely better than medical surgical masks!

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KN95 Mask