Division 4 PROCEDUREF1 United Kingdom Repealed Original text. Later amendments are not shown. 4.1Preparation of ion exchange resin 4.2Preparation of ion exchange column 4.3Separation of DL-malic acid 4.4Determination of malic acid 4.5Plotting the calibration curve Annotations Textual amendments F1 Repealed by Commission Regulation (EC) No 606/2009 of 10 July 2009 laying down certain detailed rules for implementing Council Regulation (EC) No 479/2008 as regards the categories of grapevine products, oenological practices and the applicable restrictions. ← Division 3.9 Division 4 Division 4.1 →