公开(公告)号：JPH08187438A

公开(公告)日：1996-07-23

申请号：JP17730493

申请日：1993-06-24

Applicant: LABSYSTEMS OY

Inventor： YUTSUKA TSUUNANEN ,  YUHA TERIMAA ,  ANCHI KEIPI ,  ARI KUTSUKONEN

IPC: G01N1/00 ,  B01L3/02

Abstract: PURPOSE: To collect a predetermined amt. of a liquid sample simply, rapidly and accurately by controlling the movable part of a piston by an electronic control system to stop the same at a desired position and sliding a knob displacement measuring system connecting the displacement of a knob to the control system of the piston. CONSTITUTION: A piston 9 is moved by a motor 11 and transmission mechanisms 12, 13 to be stopped at a desired position by an electronic control system 34. A knob 3 slides reciprocally within a body 1 but the movement of the piston 9 is controlled on the basis of the displacement of the knob by a knob displacement control system 25. The piston 9 in the body 1 is moved and a liquid is sucked in a pipette from a lower end cylinder 2 to be discharged.