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Surgical mask filter and fit performance - ScienceDirect- astm level 3 маски против n95 ,May 01, 2008·Methods. Filter penetration was measured for at least 3 replicates of 9 surgical masks using monodisperse latex sphere aerosols (0.895, 2.0, and 3.1 μm) at 6 L/min and 0.075-μm sodium chloride particles at 84 L/min. Facial fit was measured on 20 subjects for the 5 masks with lowest particle penetration, using both qualitative and quantitative fit tests.China Safety Cone Bar Bulkbuy Suppliers, Safety Cone Bar ...China Safety Cone Bar Bulkbuy wholesale - high quality Safety Cone Bar Bulkbuy products in best price from china manufacturers, Safety Cone Bar Bulkbuy suppliers, wholesalers and factory on topchinasupplier.com



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May 01, 2008·Methods. Filter penetration was measured for at least 3 replicates of 9 surgical masks using monodisperse latex sphere aerosols (0.895, 2.0, and 3.1 μm) at 6 L/min and 0.075-μm sodium chloride particles at 84 L/min. Facial fit was measured on 20 subjects for the 5 masks with lowest particle penetration, using both qualitative and quantitative fit tests.

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