Test method to measure the efficiency of air filtration media against spherical nanomaterials - Part 1: Size range from 20 nm to 500 nm

Test method to measure the efficiency of air filtration media against spherical nanomaterials - Part 1: Size range from 20 nm to 500 nm

Standard Number ČSN EN ISO 21083-1
Organization Czech Standardization Agency Czech Republic
Level National
Category Test Method | Characterization | Measurement
Status
  • SEP 2019 Published
ABSTRACT
ČSN EN ISO 21083-1 This document specifies the testing instruments and procedure for determining the fractional filtration efficiencies of flat sheet filter medium against airborne nanoparticles in the range of 20 nm to 500 nm. The testing methods in this document are limited to spherical or nearly-spherical particles to avoid uncertainties due to the particle shape.