EN ISO 14446:2010

Foreword
1 Scope
2 Normative references
3 Principle
4 Apparatus and reagents
5 Sampling and preparation of samples for testing
6 Preparation of apparatus for testing
7 Procedure
8 Expression of results
9 Precision
10 Test report
Annex A (normative) - Classification system for industrial
        cellulose nitrate

This International Standard specifies a method of determining the viscosity of industrial cellulose nitrate, usuallyreferred to as nitrocellulose, the nitrogen content of which can vary between 10,7 % by mass and 12,6 % by mass,depending on the type.It also gives a classification system for industrial cellulose nitrate solutions (see annex A) which is based onviscosity measurements made using the method. The use of a standard procedure results in "standard" types andavoids classification differences which could be caused by the fact that there are many ways of determiningviscosity and a wide variety of solvents available.