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Shallow of surgical masks to accord with what standard?

by:Copper Plus     2020-12-30
Surgical masks used by the masses of users are now more and more, there are very few users know the manufacture of the surgical masks to accord with what standard, below small make up to give the user a simple introduction, hope can help to you. Medical respirator to meet GB19083 - 2003 standard for medical respirator technical requirements, the important technical indicators: (including non oily particle filtration efficiency and flow resistance 1) Filtration efficiency: in air flow ( 85±2) Under the condition of L/min, median diameter (dynamics of air 0. 24±0. 6) Microns of sodium chloride aerosol filtration efficiency of no less than 95%, which conform to the N95 ( Or FFP2) And above level. ( 2) Inspiratory resistance: under the condition of the flow, inspiratory resistance less than 343. 2Pa( 35mmH2O) 。 2. Medical surgical masks accord with YY0469 - 2004 standard for medical surgical masks, technical requirements, major technical indexes including filtration efficiency, bacteria filtration efficiency and respiratory resistance: ( 1) Filtration efficiency: in air flow ( 30±2) Under the condition of L/min, median diameter (dynamics of air 0. 24±0. 6) Mu m sodium chloride aerosol filtration efficiency of no less than 30%; ( 2) Bacteria filtration efficiency: under prescribed conditions, the average particle diameter ( 3±0. 3) Mu m of staphylococcus aureus aerosol filtration efficiency of no less than 95%; ( 3) Breathing resistance: under the condition of the efficiency of filtering flow, inspiratory resistance less than 49 pa, expiratory resistance is not more than 29. 4Pa。
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