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EN 12634:1998
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The latest, up-to-date edition.
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Petroleum products and lubricants - Determination of acid number - Non-aqueous potentiometric titration method
21-10-1998
Foreword
1 Scope
2 Normative references
3 Definition
4 Principle
5 Reagents
6 Apparatus
7 Sampling
8 Sample preparation for used oils
9 Apparatus preparation
10 Procedure
11 Calculation
12 Expression of results
13 Precision
14 Test report
Annex A (normative) Procedure for the standardization
of TMAH standard solution
Annex B (normative) Electrode preparation, maintenance
and storage and electrode system quality assurance
Annex C (informative) Bibliography
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