Division 3.1 Trans-esterification with methanolic solution of potassium hydroxide at room temperatureF1 United Kingdom Original text. Later amendments are not shown. 3.1.1Principle 3.1.2Reagents 3.1.3Apparatus 3.1.4Purification of oil samples 3.1.5Procedure Annotations Textual amendments F1 Substituted by Commission Implementing Regulation (EU) 2015/1833 of 12 October 2015 amending Regulation (EEC) No 2568/91 on the characteristics of olive oil and olive-residue oil and on the relevant methods of analysis. ← Division 3 Division 3.1 Division 3.1.1 →