ISO 5637:2024
Paper and board — Determination of water absorption after immersion in water
This document specifies a method for the determination of the water absorption of paper and board after total immersion in water for a specified time.
The method is applicable to all types of paper and board which have a degree of water resistance. It is not applicable to very absorbent papers such as tissue papers and tissue products.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus, reagents and materials
6 Sampling
7 Test pieces
7.1 Preparation
7.2 Conditioning
8 Procedure
8.1 Preparation
8.2 Immersion time
8.3 Immersion of the test piece
8.4 Excess water removal
8.5 Mass determination
9 Calculation of results
9.1 General
9.2 Individual water absorption
9.3 Average water absorption
9.4 Relative water absorption
10 Test report
Annex A (informative) Examples for support systems
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus, reagents and materials
6 Sampling
7 Test pieces
7.1 Preparation
7.2 Conditioning
8 Procedure
8.1 Preparation
8.2 Immersion time
8.3 Immersion of the test piece
8.4 Excess water removal
8.5 Mass determination
9 Calculation of results
9.1 General
9.2 Individual water absorption
9.3 Average water absorption
9.4 Relative water absorption
10 Test report
Annex A (informative) Examples for support systems