This box of 50 3-ply surgical style masks from Zaidtek Electronic Technology Co. Ltd. are type IIR classified with an EN 14683:2019. BFE is > or equal to 95 % , differential pressure is < 40 (Pa/cm2) splash resistance ( n/a) and Microbial cleanliness < or equal to 30 (cfu/g). They are not intended for front line workers in a operating room. They are intended for patients and other persons to reduce risk of spread of infection. They can also be used in a care giving setting.