BS 7406:1991
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Methods for determination of water vapour transmission rate of sheet materials (paper and board) by dynamic sweep and static gas methods
Hardcopy , PDF
03-03-2021
English
01-31-1991
Committees responsible
National foreword
Method
1. Scope
2. Normative references
3. Definitions
4. Method A: Dynamic sweep gas method
5. Method B: Static gas method
6. Sampling
7. Preparation of test pieces
8. Procedure
9. Expression of results
10. Precision
11. Test report
Annexes
A. Saturated saline solutions
B. Calibration
C. Comparison of dynamic method with gravimetric
method
Figures
1. Schematic diagram of dynamic system
2. Schematic diagram of static system
C.1 Dynamic method compared with gravimetric method
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