In a process and apparatus for treating or processing containers (2) that are used for storing substances for medical, pharmaceutical or cosmetic applications or contain the same, cylindrical containers open at least at one end are automatically led past or pass through processing stations for treatment or processing by means of a conveying device, while said containers are jointly held by a carrier (25; 134) in a regular two-dimensional arrangement. The carrier comprises a plurality of openings or receptacles (32; 39; 87; 120), which determine the regular arrangement.
According to the invention, the treatment or processing of the containers is performed on or in at least one of the processing stations while the containers are supported by the carrier. This opens up new possibilities for treating or processing the containers, for example when crimping metal lids or during freeze-drying.