BS ISO 22197-4:2021
Fine ceramics (advanced ceramics, advanced technical ceramics). Test method for air-purification performance of semiconducting photocatalytic materials. Removal of formaldehyde

Standard No.

BS ISO 22197-4:2021

Release Date

2021

Published By

British Standards Institution (BSI)

Status

Be replaced 2013-04

Replace By

BS ISO 22197-4:2013

Latest

BS ISO 22197-4:2013

BS ISO 22197-4:2021 history

• 2021 BS ISO 22197-4:2021 Fine ceramics (advanced ceramics, advanced technical ceramics). Test method for air-purification performance of semiconducting photocatalytic materials. Removal of formaldehyde
• 2013 BS ISO 22197-4:2013 Fine ceramics (advanced ceramics, advanced technical ceramics). Test method for air-purification performance of semiconducting photocatalytic materials. Removal of formaldehyde