DIN ISO 22197-1:2016-04

This document is an adoption of International Standard ISO 22197-1:2007 prepared by Technical Committee ISO/TC 206 "Fine ceramics" of the International Organization for Standardization (ISO), the secretariat of which is held by JISC (Japan). This part of ISO 22197 specifies a test method for the determination of the air-purification performance 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 with ultraviolet light. This part of ISO 22197 is intended for use with different kinds of materials, such as construction materials in flat sheet, board or plate shape, that are the basic forms of materials for various applications. In addition this part of ISO 22197 also applies to materials in honeycomb-form and to plastic or paper materials if they contain ceramic microcrystals and composites. However, this part of ISO 22197 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, such as decomposition of water contaminants, self-cleaning, antifogging and antibacterial actions. It concerns the removal of nitric oxide. The responsible national standardization committee is Working Committee NA 062-02-93 AA "Photokatalyse" ("Photocatalysis") at DIN Standards Committee Materials Testing (NMP).