| 摘要 |
PURPOSE: A cap fixing member of a DO(Dissolved Oxygen) measuring bottle is provided to reduce the error in an examination by firmly fixing a cap of a measuring bottle via an elastic member. CONSTITUTION: A cap fixing member of a DO measuring bottle comprises a bottle neck plate(4) and an elastic member(6). The bottle neck plate is inserted to a bottle neck of the bottle. The bottle neck plate includes an opening(12), a fixing hole(14), and a fitting hole(16). The elastic member is fixed on the bottle neck plate. A cap is assembled with the measuring bottle after inserting the bottle neck plate to the bottle neck of the bottle. The elastic member is stretched by pulling, and a fixing weight(22) is inserted to the fitting hole of the bottle neck plate. According to the stretching of the elastic member, the cap is pressurized. Therefore, the cap is restrained from opening.
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