Status
Gældende
Type
Standard
Varenummer
M329785
Udgivelsesdato
2019-03-26
Komite
ISO/TC 142
International arbejdsgruppe WG
ISO/TC 142
Internationale relationer
ISO/TS 21083-2:2019 IDT
Dansk udvalg
Antal sider
62
Scope
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.