NF ISO 2528
Sheet materials - Determination of water vapour transmission rate (WVTR) - Gravimetric (dish) method
ISO 2528:2017 specifies a method for the determination of the water vapour transmission rate (often erroneously called "permeability") of sheet materials.This method is not generally recommended for use if the transmission rate is expected to be less than 1 g/m2 per day or for materials thicker than 3 mm. In such cases the method specified in ISO 9932 is preferred.The method cannot be applied to film materials that are damaged by hot wax or that shrink to an appreciable extent under the test conditions used.For some purposes it may be necessary to determine the transmission rate of creased material; a procedure for this is given in Annex A.
ISO 2528:2017 specifies a method for the determination of the water vapour transmission rate (often erroneously called "permeability") of sheet materials.
This method is not generally recommended for use if the transmission rate is expected to be less than 1 g/m2 per day or for materials thicker than 3 mm. In such cases the method specified in ISO 9932 is preferred.
The method cannot be applied to film materials that are damaged by hot wax or that shrink to an appreciable extent under the test conditions used.
For some purposes it may be necessary to determine the transmission rate of creased material; a procedure for this is given in Annex A.
- Avant-propos
-
1 Domaine d'application
-
2 Références normatives
-
3 Termes et définitions
-
4 Principe
-
5 Appareillage et matériaux
-
6 Échantillonnage
-
7 Conditionnement
-
8 Préparation des éprouvettes
-
9 Préparation des capsules
-
10 Mode opératoire
-
11 Expression des résultats
-
12 Fidélité
-
13 Rapport d'essai
- Annexe A (normative) Méthode de détermination du coefficient de transmission de la vapeur d'eau des matériaux pliés
- Annexe B (normative) Conditions d'essai
- Annexe C (informative) Cires de scellement
- Bibliographie
The Requirements department helps you quickly locate within the normative text:
- mandatory clauses to satisfy,
- non-essential but useful clauses to know, such as permissions and recommendations.
The identification of these types of clauses is based on the document “ISO / IEC Directives, Part 2 - Principles and rules of structure and drafting of ISO documents ”as well as on a constantly enriched list of verbal forms.
With Requirements, quickly access the main part of the normative text!

At a glance, you will be able to identify the additions, deletions or modifications to a text, table, figure and formula.

The Redlines + service is offered to you on the collection of French standards in force, in French language and in HTML and PDF format.
For an overview of the service, click on View a standard in redline format
COBAZ is the simple and effective solution to meet the normative needs related to your activity, in France and abroad.
Available by subscription, CObaz is THE modular solution to compose according to your needs today and tomorrow. Quickly discover CObaz!
Request your free, no-obligation live demo
I discover COBAZ