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Status : Active
Standard Type : Main
Document No : ISO/TS 21083-2:2019
Document Year : 2019
Pages : 52
Edition : 1
Section Volume : Cleaning equipment for air and other gases (ISO/TC 142.)
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.