21/30425873 DC
BS ISO 22197-4. Fine ceramics (advanced ceramics, advanced technical ceramics). Test method for air-purification performance of semiconducting photocatalytic materials. Part 4. Removal of formaldehyde

Standard No.

21/30425873 DC

Release Date

2020

Published By

British Standards Institution (BSI)

Latest

21/30425873 DC

21/30425873 DC history

• 0000 21/30425873 DC