NEN EN ISO 5509 : 2000

Foreword
Introduction
1 Scope
2 Normative references
3 General method using boron trifluoride
4 Trimethylsulfonium hydroxide (TMSH) method
5 Trans-esterification method
6 Precision
Annex A (normative) General analytical procedures
Annex B (informative) Results of interlaboratory test
Annex ZA (normative) Normative references to international
         publications with their relevant European publications
Bibliography

Specifies methods of preparing the methyl esters of fatty acids. It includes methods for preparing fatty acid methyl esters from animal and vegetable fats and oils, fatty acids and soaps. To cover different requirements, three methylation methods are specified, as follows: a) boron trifluoride(BF3) method; b) trimethylsulfonium hydroxide(TMSH) method; c) trans-esterification method.