BS-ISO-22197-4 › Complete Document History
Fine ceramics (advanced ceramics, advanced technical ceramics). Test method for air-purification performance of semiconducting photocatalytic materials

Complete Current Edition:
   2021 EDITION - Removal of formaldehyde. - July 29, 2021

Obsolete Revision Information:
   2013 EDITION - Fine ceramics (advanced ceramics, advanced technical ceramics). Test method for air-purification performance of semiconducting photocatalytic materials. Removal of formaldehyde - April 30, 2013