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ISO/TS 21083-2:2019

Test method to measure the efficiency of air filtration media against spherical nanomaterials — Part 2: Size range from 3 nm to 30 nm

Publication date:   Mar 22, 2019

General information

90.60   Close of review   Dec 3, 2025

ISO

ISO/TC 142 Cleaning equipment for air and other gases

Technical Specification

91.140.30   Ventilation and air-conditioning systems

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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.

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PUBLISHED
ISO/TS 21083-2:2019
90.60 Close of review
Dec 3, 2025