| 摘要 |
PURPOSE:To constantly perform desired measurement stably with efficiently reduced impact at the time of putting a carrier into a reactor by dividedly putting buffer solution into the reactor prior to putting of the carrier. CONSTITUTION:At first turn of a reactive tube disk 12, a constant amount of buffer solution 32 is dividedly put into a U-tube 11 at a stop position S16 by a buffer solution dividedly putting device 31. Then, at a stop position S17, carriers 21 are put from a carrier putting vessel 20 into the U-tube one by one from a large mouth 11a of the tube 11 to have them moistened in the buffer solution in the U-tube 11. Impact at the time of putting in thus can be reduced so that the U-tube and/or the carriers can be efficiently prevented from being damaged. The U-tube is cleaned with cleaning fluid which is intermittently poured like a shower from the large mouth 11a by a cleaning pump 24 at a position S22 while said fluid is sucked out from an exhaust pump 28 via a small mouth 11b, and at a position S23, the cleaning fluid is almost completely exhausted further via the small mouth 11b. The amount of the buffer solution in the U-tube 11 after the buffer solution is dividedly poured thereby can be maintained constant. |
