Abstract: The invention relates to a holder for one or more vials that comprises a rear attachment platen (2) including one or more side clamping means in the form of clamps (4), each clamp being connected to or removably mounted on the platen. Each clamp includes two opposite curved blades (5), the main portion of each blade being convex and the free end oriented towards the outside in order to define an inlet gap opened towards the outside and an inner holding volume having a generally elongated shape, e.g. oval, between each blade of each clamp for receiving therein a vial (7) with clamping side holding. The vial holder may include a bearing means (10) at each pair of clamps in the form of an L-shaped strip (11) having its upper vertical portion connected to or removably mounted on the rear attachment platen, while its lower horizontal portion (13) has a free end (14).