ISO 21066:2018

Fine ceramics (advanced ceramics, advanced technical ceramics) — Qualitative and semiquantitative assessment of the photocatalytic activities of surfaces by the reduction of resazurin in a deposited ink film

This document specifies a method, the Resazurin (Rz) ink test, for the qualitative assessment of the activity of a photocatalytic surface, and its classification as below, within, or above the applicable range of the test. The method then allows for the subsequent semiquantitative evaluation of the activities of photocatalytic surfaces that are within the applicable range of the test. In all cases, artificial ultraviolet (UV) radiation is used. The test method specified is appropriate for use with all flat, smooth, photocatalytic surfaces, which are not macroporous, examples of which include: commercial photocatalytic glass, paint, tiles and awning materials. The method is not applicable to assessing the visible-light activity of photocatalytic surfaces, nor their ability to effect: air purification, water purification, self-cleaning or disinfection, although some relevant correlations have been reported[4][5].

Céramiques techniques (céramiques avancées, céramiques techniques avancées) — Évaluation qualitative et semi-quantitative de l’activité photocatalytique des surfaces par réduction de résazurine dans un film d’encre déposé

General Information

• Status: Published
• Publication Date: 18-Sep-2018
• ICS: 81.060.30 - Advanced ceramics
• Technical Committee: ISO/TC 206 - Fine ceramics
• Drafting Committee: ISO/TC 206/WG 9 - Photocatalysis
• Current Stage: 9060 - Close of review
• Start Date: 04-Mar-2029

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 21066
First edition
2018-09
Fine ceramics (advanced ceramics,
advanced technical ceramics) —
Qualitative and semiquantitative
assessment of the photocatalytic
activities of surfaces by the reduction
of resazurin in a deposited ink film
Céramiques techniques (céramiques avancées, céramiques techniques
avancées) — Évaluation qualitative et semi-quantitative de l’activité
photocatalytique des surfaces par réduction de résazurine dans un
film d’encre déposé
Reference number
ISO 21066:2018(E)
©
ISO 2018

---------------------- Page: 1 ----------------------
ISO 21066:2018(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved

---------------------- Page: 2 ----------------------
ISO 21066:2018(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 List of symbols, abbreviations and units . 2
5 Principle . 3
5.1 General . 3
5.2 Qualitative test method (three samples) . 3
5.3 Semiquantitative test method (eight samples) . 3
6 Apparatus . 4
6.1 Coating device . 4
6.2 UV-radiation light source . 4
6.3 UV radiometer . 4
6.4 Irradiation system . 4
6.5 Digital imaging device and analysis software . 5
7 Materials . 6
7.1 Rz ink preparation . 6
7.1.1 Dye purity test (if purity is unknown) .
...