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)