Before that, we should first distinguish a very important concept, that is, “civil mask” and “medical mask”. There are many standards, but the most important difference is that: Civil masks generally emphasize “particulate matter” filtration efficiency, while medical masks generally emphasize “bacterial filtration efficiency”. Please note that these two terms are often mentioned below.
Kn95 mask: “kn” is actually just a code. This code “kn” is specially used in China. He represents a kind of mask of “only used to filter non oil particles” (correspondingly, there is also a mask code of KP that can “filter non oil and oil particles”, such as kp95 mask, but not common in life). The national standard is gb2626 It is a standard of “civil masks”. In this standard, three grades are defined according to the filtration efficiency of particles:
- KN90: ≥90%
- KN95: ≥95%
- KN100: ≥99.97%
Therefore, generally speaking, “kn95 mask” means a kind of non-medical mask with filtration efficiency ≥ 95% of “particulate matter” produced according to Chinese civil mask standard gb2626. (special note: this has nothing to do with the N95 mask in the United States. N95 is a non-medical mask with filtration efficiency ≥ 95% produced according to NIOSH standard in the United States. At the same time, there are two higher filtration levels, n99 (≥ 99%) and N100 (≥ 99.7%).
FFP level. Most people think that FFP2 is for civil use and ffp3 is for medical use, which is not true. FFP grade is only the “particle” filter grade mark in European “civil mask test standard” en149. There are three filter efficiencies in total:
That is to say, no matter FFP2 or ffp3, it means “particle filtration level”. Both civil and medical use can do corresponding detection and make corresponding identification when passing.
What is the European standard for medical masks? It’s en14683. There is no filter level in this standard, only mask level, which are respectively:
- Type I
- Type II
- Type II R
Therefore, if customers in Europe want to buy masks in the future, they should first determine whether they are “civil” or “medical”. The simplest way is to confirm with customers whether the mask standard is en149 or en14683. If the customer only talks about FFP2 and ffp3, make sure to confirm with the customer clearly. It’s better to sweep the illiteracy and popularize the mask knowledge for the customer.
At the same time, some common descriptions are explained:
Kn95-ffp2: it means that the filter efficiency of “particulate matter” produced according to the Chinese civil mask standard gb2626 is ≥ 95%, and the civil mask with filter grade of FFP2 has passed the European en149 test.
Kn95-ffp3: it refers to the civil mask manufactured according to the Chinese civil mask standard gb2626, which has a filtration efficiency of ≥ 95%, and has passed the European en149 test to identify the filter grade of ffp3.
Kn95 type II: it refers to the “medical mask” manufactured according to the Chinese civil mask standard gb2626, with a filtration efficiency of ≥ 95%, and passing the European en14683 test and identification grade of type II.
Therefore, the key to judge whether the mask is “civil” or “medical” is to determine the inspection standard of the mask needed.