Patent ID: 8052942

Claim:
An analytical tool cartridge comprising: a case including a storage space and a retrieval port that communicates the storage space with an external space; a plurality of analytical tools stored in the storage space in a stacked state; a retrieval mechanism for retrieving the analytical tools one at a time from the case via the retrieval port; and an opening/closing mechanism for opening and closing the retrieval port; wherein the retrieval mechanism and the opening/closing mechanism are integral with each other as a single operating body, wherein the operating body is formed in a loop encircling the plurality of analytical tools and comprises an engaging projection, a closing portion and an opening portion, the engaging projection being configured to integrally move the analytical tools when the operating body is moved in a specific direction from a standby state, the closing portion being configured to close up the retrieval port in the standby state, the opening portion being configured to open up the retrieval port when the operating body is moved in the specific direction from the standby state.