ISO/TS 21083-2:2019 Preview
Test method to measure the efficiency of air filtration media against spherical nanomaterials -- Part 2: Size range from 3 nm to 30 nm
This document specifies the testing instruments and procedure for determining the filtration efficiencies of flat sheet filter media against airborne nanoparticles in the range of 3 nm to 30 nm. The testing methods in this document are limited to spherical or nearly-spherical particles to avoid uncertainties due to the particle shape.
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