Masks are divided into medical masks and non-medical masks, (and the latest confirmed) civilian sanitary masks.
At present, my country's mask standard mainly regulates the two major areas of civil protection and medical protection. The civil protective mask standard GB/T 32610-2016 "Technical Specification for Daily Protective Masks", GB 2626-2006 "Respiratory Protective Equipment Self-priming Filtering Anti-Particulate Respirator", mainly applicable to particle protection, in the prevention and control of this epidemic However, the barrier masks (mainly flat masks) used in large numbers for resumption of work and production cannot meet the requirements of the above two standards. The medical field standards GB 19083-2010 "Technical Requirements for Medical Protective Masks", YY 0469-2011 "Medical Surgical Masks", YY/T 0969-2013 "Disposable Medical Masks" are mainly applicable to medical institutions. However, according to the use of masks and the user population, there is no suitable standard for sanitary (barrier type) masks used by ordinary people. In order to better meet the urgent needs of the masses for sanitary masks during the epidemic, facilitate the adoption of standards and applications for companies that produce/transform masks, while ensuring product quality and facilitating market supervision. The market conducted demonstration studies and urgently submitted an application for the establishment of the group standard of "civil sanitary masks" to the Standardization Technical Committee of the China National Textile and Apparel Council (referred to as China Textile Federation). On March 11, the China Industry Association officially issued the T/CNITA 09104-2020 "Civilian Sanitary Masks" standard.
N series: no time limit for protection of non-oily suspended particles
R series: protection of non-oily suspended particles and sweat oily suspended particles for eight hours
P series: protect non-oily suspended particles and sweat oily suspended particles without time limit
When the carrier of some particulate matter is oily, and these substances attached to the electrostatic non-woven fabric will reduce the electrical properties and allow fine dust to penetrate. Therefore, the anti-aerosol-containing filter material must undergo special electrostatic treatment to prevent fineness. The purpose of dust. So each series is divided into 3 levels: 95%, 99%, 99.97% (referred to as 95, 99, 100 for short), so there are 9 sub-categories of filter media.
