| 摘要 |
A nozzle device in an apparatus for biochemical reaction, including a biochemical reaction chamber, includes a nozzle having a tip and a porous filter fixed to the tip. The nozzle further includes an outer nozzle tube defining a first bore extending to the tip, a second bore extending through the porous filter and being coaxial with the first bore, an inner tube extending through the first bore to the tip and defining a third bore, the inner tube being tightly fitted into, and extending through, the second bore and having an outer diameter smaller than that of the inner diameter of the first bore to define an annular space in communication with the filter. The third bore is connected to a source of liquid and the annular space is connected with a source of suction, so that a liquid can be discharged to the reaction chamber from the first bore and sucked out of the reaction chamber through the filter. |
