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Marcio KN95 Mask Protective Face-Mask CE Certified Protect from Viruses and Bacterias


৳ 300.00৳ 350.00

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Estimated Delivery Date 21/05/2021

Filter performance – the filter is evaluated to measure the reduction in concentrations of specific aerosols in air that passes
through the filter.
Test agent – the aerosol that is generated during the filter performance test.
Total inward leakage (TIL) – the amount of a specific aerosol that enters the tested respirator facepiece via both filter
penetration and faceseal leakage, while a wearer performs a series of exercises in a test chamber.
Inward leakage (IL)– the amount of a specific aerosol that enters the tested respirator facepiece, while a wearer performs a
normal breathing for 3 minutes in a test chamber. The test aerosol size (count median diameter) is about 0.5 micro meter.
Pressure drop – the resistance air is subjected to as it moves through a medium, such as a respirator filter.

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With Filter, Without Filter

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