# Commission Regulation (EC) No 911/2004 of 29 April 2004 implementing Regulation (EC) No 1760/2000 of the European Parliament and of the Council as regards eartags, passports and holding registers (Text with EEA relevance), Article 2

Extent: E+W+S+N.I.

Ear tags shall comply with the following requirements:
(a) they shall be of flexible plastic material;
(b) they shall be tamper-proof and easy to read throughout the lifetime of the animal;
(c) they shall not be re-usable;
(d) they shall be designed in such a way that they can remain attached to the animal without being harmful to it;
(e) they shall carry only non-removable inscriptions, as provided for in Article 1.

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Source: https://www.legislation.gov.uk/eur/2004/911/article/2 (the official version)
Page: https://openlegislation.uk/eu-regulation-2004-911/article-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.