ISO/DIS 24269

Nonwovens — Performance requirements and test methods for filtration and safety — Materials for general use face coverings

Scope

This document specifies the performance requirements and testing methods for nonwoven nonmedical masks for general use that prevent droplets containing bacteria from scattering into the air and prevent microparticles, bacterial droplets, and virus droplets from entering the body.
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 pressure
For 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.