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Standard
ISO 17491-4
Second edition
Protective clothing — Test methods
2024-05
for clothing providing protection
against chemicals —
Part 4:
Determination of resistance to
penetration by a spray of liquid
(spray test)
Habillement de protection — Méthodes d’essai pour les vêtements
fournissant une protection contre les produits chimiques —
Partie 4: Détermination de la résistance à la pénétration par
pulvérisation de liquide (essai au brouillard)
Reference number
ISO 17491-4:2024(en) © ISO 2024
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ISO 17491-4:2024(en)
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© ISO 2024
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Published in Switzerland
© ISO 2024 – All rights reserved
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ISO 17491-4:2024(en)
Contents Page
Foreword .iv
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle of test method . 2
5 Test liquid . 2
6 Apparatus and test subjects . 2
7 Preparation of the test subjects for the spray test . 5
8 Preparation of the spray application system . 5
8.1 Test liquid .5
8.2 Nozzle output .5
8.3 Distribution of the spray liquid and alignment of spray nozzles .6
9 Procedure . 7
9.1 Spray procedure .7
9.2 Procedure for penetration and stains .7
10 Test report .
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