Fine ceramics (advanced ceramics, advanced technical ceramics). Test method for air-purification performance of semiconducting photocatalytic materials - Removal of formaldehyde LONG_TITLE but these are not covered

but these are not covered by the procedures specified in this International Standard

An accurate and rapid method in BS 6829-3

with the three parts all making a contribution to defining how digital certificates can be used to provide security services in the health industry

being part of a repair product or system

Two-sided tolerance limit factors (k)

Fine ceramics (advanced ceramics, advanced technical ceramics). Test method for air-purification performance of semiconducting photocatalytic materials - Removal of formaldehyde LONG_TITLE but these are not covered1 Scope 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 (UV A). This part of ISO 22197 is intended for