| 摘要 |
PURPOSE:To provide a dispenser for liquid sample having high general-purpose application, which can flexibly cope with distribution tips having the different sizes and can maintain the performances even in use for the long period. CONSTITUTION:A dispenser is constituted of a head member 12, a double pipe 13, wherein the vicinities of the tip opening parts of a sample feeding and discharging pipe body 16 (inner pipe) and a fluid feeding and discharging pipe body 17 (outer pipe) are formed as a unitary body, a balloon 14 and a distribution tip 15. The columnar head member 12 supports the double pipe 13 at the part, where the balloon 14 is avoided, and has the diameter larger than the distribution tip 15. The balloon 14 is provided in the ring state at the outer surface of the opening part of the sample feeding and discharging pipe body 16 through the fluid feeding and discharging pipe body 17. The balloon 14 is inserted into the distribution tip 15 in the contracted state. When the balloon 14 is inserted into the distribution tip 15 by the specified length, balloon operating liquid is guided into the balloon 14 through the fluid feeding and discharging pipe body 17 and the outer pipe of the double pipe 13. Then, the balloon 14 is expanded, brought into contact with the inner wall of the distribution tip 15 and fixed in the airtight mode. |
