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Standards Development
This document specifies the performance requirements and test methods of for filtration property and safety of materials intended for nonwoven general use face coverings for single use.
IMPORTANT — Nonwoven general use face coverings specified in this document are not medical face masks (EN14683), medical devises (MD), nor are personal protective equipment (PPE) in the scope of ISO/TC94/SC15, Respiratory protective devices (RPD).
The following properties are specified for filtration property,
— sub-micron filtration efficiency（PFE）
— water aerosol filtration efficiency with bacteria（BFE）
— water aerosol filtration efficiency with viruses（VFE）
— pollen particle filtration efficiency
— Differential pressureFor safety items are as follow,
— free formaldehyde
— specific azo dye
— Heavy metals
— pH
All tests shall be carried out on finished products or samples cut from finished products.
In case of that the products do not have enough size for the tests, the tests shall be carried out same materials and same layers of the products.
NOTE 1 The examples of these cases are general use face coverings for children, three-dimensional type, etc.
NOTE 2 The required performance of filtration is expected when no air leakage is occurred from the general use face covering wearer in practical use.
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