PURPOSE: To make a distribution route of sold ampoules clear and to find and prevent sales by an irregular distribution route by providing encoded letters, numbers, symbols, figures, bar codes or a combination of them on the ampoules.

CONSTITUTION: A printer 1 prints encoded symbols, etc., 2 on ampoules (a) which are different one by one and the rule is not known, such as A3246, 548HA, *32GF, X53#B, etc., for example. Then information during an inspection process by an inspecting apparatus 4 is stored by a computer 5 as a combination of the encoded symbols, etc., 2 to identify individual ampoules (a). The symbols, etc., 2 may be any encoded ones for individual control, while encoded letters, numbers, symbols, figures, bar codes, etc., for example can be utilized.