Ear tags shall comply with the following requirements:

1. (a)

   they shall be of flexible plastic material;

2. (b)

   they shall be tamper-proof and easy to read throughout the lifetime of the animal;

3. (c)

   they shall not be re-usable;

4. (d)

   they shall be designed in such a way that they can remain attached to the animal without being harmful to it;

5. (e)

   they shall carry only non-removable inscriptions, as provided for in Article 1.