Under the conditions determined by the administration, the sealing formality provided for by Article 308 :
1° Holders of test stills, as defined by ministerial order (1);
2° Scientific and educational establishments for apparatus exclusively intended for experiments;
3° Qualified pharmacists;
4° Persons who can justify the need to use distillation apparatus for specific purposes and who do not use any alcoholic substances.
However, the benefit of this exception is acquired only by holders in possession of a personal authorisation given by the administration. This authorisation can always be revoked (2).
(1) Annex IV, art. 51.
(2) As regards control, see Livre des procédures fiscales, art. L. 29.