5. Areas, rooms or enclosures used for the storage of significant quantities of dangerous substances or preparations must be indicated by a suitable warning sign taken from paragraph 3.2 of Part II, or marked as provided in paragraph 1 of Part III, unless the labelling of the individual packages or containers is adequate for this purpose, taking into account Part II, paragraph 1.5 with regard to dimensions.
Stores of a number of dangerous substances or preparations may be indicated by the warning sign for general danger.
The signs or labels referred to above must be positioned, as appropriate, near the storage area or on the door leading into the storage room.