Research on testing methods for protective performance of mask standards at home and abroad
By analyzing the structure size of influenza virus disease,SARS virus disease,the 2019 coronavirus disease and particles for leakage testing,the suggestions for improving the test of bacterial filtration efficiency were put forward.Based on the standards of masks in China and major developed countries around the world,quality control limits and testing methods for filtration efficien-cy,inward leakage,fit,fit factor,and particle protective performance were compared.The suggestions were given for improving medical mask standards,unifying the terminology of protective performance,and standardize testing methods,etc.These will im-prove the testing behavior,enterprise production activities,and mask quality,and providing strong technical support for the preven-tion of respiratory infectious diseases.
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