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.

公开(公告)号：JPH04274732A

公开(公告)日：1992-09-30

申请号：JP30843291

申请日：1991-10-28

Applicant: LABSYSTEMS OY

Inventor： YUTSUKA TSUUNANEN ,  AIMO KAINIEMI

IPC: G01N21/01 ,  G01N21/25

Abstract: PURPOSE: To improve accuracy in measurement by guiding the measuring light principally only to one cuvette at a time in guiding the measuring light to a plurality of cuvettes arranged in one row. CONSTITUTION: A shell part of a cylinder formed of an opaque material is provided with orifices 10 parallel to the circumference of the shell part at predeterminde intervals in the circumferential and axial directions of the shell part. Also, Light from a light source is guided into the cylinder and an optical fiber 2 radiating light from an outlet ring 7 to respective cuvettes 1. The cylinder 8 is rotated by a motor at a fixed speed to direct the measuring light to the cuvette only when the orifice 10 comes to the position of the outlet ring 7 so that accuracy in the measurement is improved.