| abstract |
[Abstract] [Object] In pipetting a blood plasma component and a red blood cell component separated vertically in a blood sample by a centrifugation, the ret blood cell component having a high viscosity is aspirated as quickly as possible. [Construction] A nozzle 32 is composed of a nozzle base 35 and a disposable tip, 36, and is transferred upwardly and downwardly and to the right and left by an XYZ robot 34. At first the blood plasma component in the blood sample put in a test tube 62 is pipetted by a nozzle 32, and then an inner wall of the disposable tip 36 is coated with the blood plasma component, and thereafter the red blood component is pipetted. |