1. Subject to paragraph 2, the centre veterinarian must ensure that—
(a)only semen is stored at the centre;
(b)semen is only stored at the centre if it has not come into contact with any other semen and—
(i)it has been collected and processed at EC collection centres, or at centres otherwise approved for semen collection under the Directive; or
(ii)it, following collection and processing at EC collection centres or at centres otherwise approved for semen collection under the Directive, has been stored at EC storage centres or at centres otherwise approved for semen storage under the Directive;
(c)the cryogenic agent used has not been previously used for other products of animal origin; and
(d)each individual dose of semen is sealed, numbered and clearly marked in such a way that the following information can be readily established—
(i)the date the semen was collected;
(ii)the identity of the donor bovine animal under the cattle identification regulations;
(iii)the breed of the donor bovine animal; and
(iv)the licence number of the centre where the semen was collected (if applicable).