| 摘要 |
PURPOSE:To prevent the mutual contamination between reagents and to simplify an apparatus by mounting tips to a pipetting nozzle sucking and emitting reagents with respect to a plurality of reagents at ever reagent bottles to use the same in common. CONSTITUTION:Reagent bottles 55a - 55h and tip holders 56 are mounted on a reagent table 54 by the number of reagents. At first, the table 54 is rotated so as to bring the indicated reagent to the place directly under a nozzle 51 and the nozzle 51 falls to be inserted in a chip 53. Next, the nozzle 51 rises and falls and the reagent is collected in the tip 53 by a syringe 52. Thereafter the nozzle 51 rises and the arm of a pipetting nozzle mechanism 50 is rotated toward a reaction line and the reagent is pipetted to reaction tubes 4. After pipetting the tip 53 is returned to the original position of the tip holder 56. Next, the pawl 60 of a tip removing apparatus 58 is moved to become the state grasping the nozzle 51 and the nozzle 51 rises in this state and the chip 53 is left in the holder 56 to complete one cycle of the pipetting of the reagent. By this method, the mutual contamination between reagents can be prevented. |
