NBN ISO 17168-2:2021

This document specifies a test method for the determination of the air-purification performance, with
regards to removal of acetaldehyde, of materials that contain a photocatalyst or have photocatalytic
films on the surface, usually made from semiconducting metal oxides such as titanium dioxide or other
ceramic materials, by continuous exposure of a test piece to the model air pollutant under illumination
from indoor light.
This document is intended for use with different kinds of materials, such as construction materials in
flat sheet, board or plate shape, which are the basic forms of materials for various applications. This
document also applies to materials in honeycomb form, and to plastic or paper materials containing
ceramic microcrystals and composites. This document does not apply to powder or granular
photocatalytic materials.
This test method is usually applicable to photocatalytic materials produced for air purification. This
method is not suitable for the determination of other performance attributes of photocatalytic materials,
i.e. decomposition of water contaminants, self-cleaning, antifogging and antibacterial actions.