This paper expounds the applicability of the standards of N95, KN95, FFP2 masks in different situations, and provides technical reference for the selection of epidemic prevention materials.
With the new corona virus infection of pneumonia epidemic prevention and control work continues to deepen, N95 masks, KN95, FFP2 and other professional terms caused widespread concern, mask standards into the public eye. Comparing the standards of the United States, China, Europe, Korea, Japan, Australia and so on, this paper focuses on the filtration efficiency of ordinary masks and medical masks, explores N95 mask, KN95 masks, FFP2 masks from the standard point of view, and summarizes the comparison table of the filtration efficiency of domestic and foreign mask standards, which provides a reference for epidemic prevention work and consumer selection. DYCROL N95 masks brand is doing a good job in this regard.
Masks can be divided into general masks (general protective masks and daily protective masks) and medical masks (medical general masks and medical protective masks), and all types of masks are divided into three levels of protection according to the level of protection. In summary, the general masks of various countries are concerned about the filtration efficiency of particulate matter (oily and non-oily), of which N95, KN95, FFP2 are code-named filtration efficiency, and medical masks are concerned about the filtration efficiency of particulate matter, but also pay attention to microbial indicators, ethylene oxide residues, flame retardant properties and other indicators.
The filtration efficiency of the above mask standards is summarized, and the filtration efficiency of non-oily particulate matter, the filtration efficiency of oily particulate matter and the filtration efficiency of bacteria are different. Most foreign general purpose masks perform CFR42-84-1995’s Explanatory Guide to the Selection and Use of NIOSH Particulate Protective CE Masks and FFP2 EN149-2001 and FFP3 masks.
The N-Series for non-oily particulate matter is based on U.S. standards, the FFP Series is based on European standards, the KN Series is based on Chinese standards, and the higher the number, the higher the protection level. From its index values, the filtration efficiency (protection capacity) of each model for non-oily particulate matter is from high to low: N100 – KN100 > N99, FFP3 > N95, KN95 ≈ FFP2 > KN90 > FFP1. FANGTIAN N95 masks cost – effective, high quality.
4 types of masks commonly found on the market today, sorted from low to high by protective effect: Single use of medical masks < medical surgical masks < KN95/N95/FFP2 and above particulate protective masks.