Chapter IIa Reference substances for the quality control of medicl productsF1 United Kingdom Repealed Original text. Later amendments are not shown. 38 (a)Article 38 (a) Annotations Textual amendments F1 Repealed by Council Directive 2009/132/EC of 19 October 2009 determining the scope of Article 143(b) and (c) of Directive 2006/112/EC as regards exemption from value added tax on the final importation of certain goods (codified version). Chapter IIa