Regulation (EU) No 1007/2011 of the European Parliament and of the Council of 27 September 2011 on textile fibre names and related labelling and marking of the fibre composition of textile products and repealing Council Directive 73/44/EEC and Directives 96/73/EC and 2008/121/EC of the European Parliament and of the Council (Text with EEA relevance) (c. 1007)

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ANNEX VIII U.K. Methods for the quantitative analysis of binary and ternary textile fibre mixtures (referred to in Article 19(1))

CHAPTER 2 U.K.

METHODS FOR QUANTITATIVE ANALYSIS OF CERTAIN BINARY TEXTILE FIBRE MIXTURES U.K.

IV. Special methods U.K.

METHOD No 12 U.K. JUTE AND CERTAIN ANIMAL FIBRES U.K.(Method by determining nitrogen content) U.K.

3. APPARATUS AND REAGENTS (other than those specified in the general instructions) U.K.

3.1. Apparatus U.K.

(a) Kjeldahl digestion flask, 200-300 ml capacity. U.K.

(b) Kjeldahl distillation apparatus with steam injection. U.K.

(c) Titration apparatus, allowing precision of 0,05 ml. U.K.

3.2. Reagents U.K.

(a) Toluene. U.K.

(b) Methanol. U.K.

(c) Sulphuric acid, relative density at 20 °C: 1,84(1). U.K.

(d) Potassium sulphate(1). U.K.

(e) Selenium dioxide(1). U.K.

(f) Sodium hydroxide solution (400 g/litre). Dissolve 400 g of sodium hydroxide in 400-500 ml of water and dilute to 1 litre with water. U.K.

(g) Mixed indicator. Dissolve 0,1 g of methyl red in 95 ml of ethanol and 5 ml of water, and mix with 0,5 g of bromocresol green dissolved in 475 ml of ethanol and 25 ml of water. U.K.

(h) Boric acid solution. Dissolve 20 g of boric acid in 1 litre of water. U.K.

(i) Sulphuric acid, 0,02N (standard volumetric solution). U.K.

(1)

These reagents should be nitrogen-free.