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4 % (v/v) acetic acid, in a freshly prepared aqueous solution.
When the migration of cadmium or of lead and cadmium is to be determined, cover the sample so as to ensure that the surface to be tested is kept in total darkness.
Fill the article with a 4 % (v/v) acetic acid solution to a level no more than 1 mm from the overflow point; the distance is measured from the upper rim of the sample.
Samples with a flat or slightly sloping rim should be filled so that the distance between the surface of the liquid and the overflow point is no more than 6 mm measured along the sloping rim.
The surface of the sample which is not intended to come into contact with foodstuffs is first covered with a suitable protective layer able to resist the action of the 4 % (v/v) acetic acid solution. The sample is then immersed in a recipient containing a known volume of acetic acid solution in such a way that the surface intended to come into contact with foodstuffs is completely covered by the test liquid.
The surface area of the articles in category 1 is equal to the surface area of the meniscus formed by the free liquid surface obtained by complying with the filling requirements set out in section 3 above.
Textual Amendments
The method allows the specific migration of lead and/or cadmium to be determined.
The determination of the specific migration of lead and/or cadmium is carried out by an instrumental method of analysis that fulfils the performance criteria of point 4.
All reagents must be of analytical quality, unless otherwise specified.
Where reference is made to water, it shall always mean distilled water or water of equivalent quality.
Add 40 ml of glacial acetic acid to water and make up to 1 000 ml.
Prepare stock solutions containing 1 000 mg/litre of lead and at least 500 mg/litre of cadmium respectively in a 4 % acetic acid solution, as referred to in point 3.1.
0,1 mg/litre for lead,
0,01 mg/litre for cadmium.
The detection limit is defined as the concentration of the element in the 4 % acetic acid solution, as referred to in point 3.1, which gives a signal equal to twice the background noise of the instrument.
0,2 mg/litre for lead,
0,02 mg/litre for cadmium.
The sample must be clean and free from grease or other matter likely to affect the test.
Wash the sample in a solution containing a household liquid detergent at a temperature of approximately 40 °C. Rinse the sample first in tap-water and then in distilled water or water of equivalent quality. Drain and dry so as to avoid any stain. The surface to be tested is not to be handled after it has been cleaned.
The sample thus prepared is tested under the conditions laid down in Annex I.
Before taking the test solution for determining lead and/or cadmium, homogenise the content of the sample by an appropriate method, which avoids any loss of solution or abrasion of the surface being tested.
Carry out a blank test on the reagent used for each series of determinations.
Carry out determinations for lead and/or cadmium under appropriate conditions.]
Textual Amendments
The written declaration referred to in Article 2a(1) shall contain the following information:
the identity and address of the company which manufactures the finished ceramic article and of the importer who imports it into the Community;
the identity of the ceramic article;
the date of the declaration;
the confirmation that the ceramic article meets relevant requirements in this Directive and Regulation (EC) No 1935/2004.
The written declaration shall permit an easy identification of the goods for which it is issued and shall be renewed when substantial changes in the production bring about changes in the migration of lead and cadmium.]