Test method to measure the efficiency of air filtration media against spherical nanomaterials - Part 2: Size range from 3 nm to 30 nm (ISO/TS 21083-2:2019)
| Standard Number | CEN ISO/TS 21083-2:2019 |
|---|---|
| Organization |
European Committee for Standardization
|
| Level | International |
| Category | Specification |
| Status |
|
ABSTRACT
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.