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:
Aug. 12, 1986
Filed:
May. 01, 1985
Theodore R Beck, Seattle, WA (US);
Rohrback Technology Corporation, Seattle, WA (US);
Abstract
An electrochemical system for determining the concentration of a bacteria or other enzymatic agents in a liquid sample (14). The system includes mounting means (20) for mounting an electrode assembly (16), and drive means for rotating the electrode assembly. The electrode assembly comprises a shaft (22) having a longitudinal axis and a longitudinally extending interior passage (40), an electrode (24) mounted at the lower end of the shaft, and sparging means (26) extending laterally from the lower end of the shaft. The sparging means is in communication with passage (40) through openings (50). The electrode and sparging means are mounted such that they are immersed in the sample when the shaft is mounted by the mounting means. The electrode assembly further comprises conductor means (44, 46) for electrically connecting the electrode to the electrochemical system. The electrode assembly is rotated during measurement of the concentration of the enzymatic agent. Prior to such measurement, dissolved oxygen may be rapidly removed from the sample by rotating the electrode assembly and introducing an inert gas into the passage, such that the inert gas passes from the rotating sparging means into the sample.