Division 4 PrincipleF1 United Kingdom Original text. Later amendments are not shown. The total acidity and fixed acidity are determined by titration or by potentiometry. Annotations Textual amendments F1 Inserted by Commission Implementing Regulation (EU) 2016/635 of 22 April 2016 amending the Annex to Regulation (EC) No 2870/2000 as regards certain reference methods for the analysis of spirit drinks. ← Division 3.3 Division 4 Division 5 →