ISO 21701:2019

INTERNATIONAL ISO
STANDARD 21701
First edition
2019-09
Textiles — Test method for accelerated
hydrolysis of textile materials and
biodegradation under controlled
composting conditions of the resulting
hydrolysate
Textiles — Méthode d’essai pour hydrolyse accélérée des matières
textiles et la biodégradation dans des conditions de compostage
contrôlées de l'hydrolysates résultant
Reference number
ISO 21701:2019(E)
©
ISO 2019

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ISO 21701:2019(E)

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Published in Switzerland
ii © ISO 2019 – All rights reserved

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ISO 21701:2019(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Reference material . 3
6 Apparatus . 3
7 Test procedure . 4
7.1 Preparation of test material . 4
7.2 Preparation of the inoculum . 4
7.3 Accelerated hydrolysis test (abiotic test) . 4
7.4 Biodegradation test (biotic test) of hydrolysate . 4
7.5 Gas chromatographic analysis . 5
8 Calculation and expression of results . 5
8.1 Amount of carbon dioxide in grams . 5
8.2 Percentage of biodegradation . 7
8.3 Validity of results . 7
9 Test report .
...