Mechanic seals: minimum security standards:
-It must be easy to use -It must be made in a way that any opening destroys it completely -The consequential numbering is to be used only once; if this is not possible, the same numbering must not be used for a period of four years.
	-It must fit ISO regulations: Not out-of-size containers -It must be self-locking and at the same time adjustable, double numbering and barcode available -The name of the producer must be clearly visible. -Absolutely not reusable