NBN EN ISO 307 : 2007 AMD 1 2013
Current
The latest, up-to-date edition.
PLASTICS - POLYAMIDES - DETERMINATION OF VISCOSITY NUMBER (ISO 307:2007/AMD 1:2013)
12-01-2013
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents and materials
6 Apparatus
7 Preparation of test samples
8 Calculation of mass of test portion
9 Selection of solvent
10 Procedure
11 Expression of results
12 Repeatability and reproducibility
13 Relationship between the viscosity number determined
in 96% (by mass) sulfuric acid solution and viscosity
number determined in various other solvents
14 Test report
Annex A (normative) - Determination of the concentration of
commercial sulfuric acid [95% (by mass) to 97%
(by mass)] and adjustment to 96% (by mass)
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