The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 05, 1984
Filed:
Nov. 19, 1981
Osmo A Suovaniemi, Helsinki, FI;
Pertti Ekholm, Helsinki, FI;
Johan Jarnefelt, Helsinki, FI;
Esko Kaukanen, Espoo, FI;
Paul Partanen, Helsinki, FI;
Labsystems Oy, , FI;
Abstract
Method and apparatus for the measurement of properties of a liquid present in a vessel (2), for example for the measurement of the absorbance of a liquid, of the properties of an agglutination, precipitate (4) or any other reaction result placed on the bottom of a vessel, by means of radiation and of a detector (3) receiving radiation while the vessel moves along with a rotor revolving around the vertical axis (15) of a centrifuge. Thereby the beam of measurement (5) coming from the source of radiation (1) passes substantially horizontally and the intensity of the radiation passing through, or reflected from, the contents of the vessel is measured. According to the invention, for the purpose of the measurement of the properties of the liquid, after the vessel (2) has pivoted for the measurement by the effect of centrifugal force so that its longitudinal axis is positioned substantially horizontally, a field of limited area is measured out of the bottom of the vessel (2) while the vessel (2) moves along with the rotor of the centrifuge through the space between the source of radiation (1) and the detector (3). The measurement result of the component field at each particular time under measurement is read constantly or at specified intervals for the purpose of processing and output of the information.