CA2300406A1 - Method and apparatus for automatic analysis - Google Patents

Method and apparatus for automatic analysis Download PDF

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Publication number
CA2300406A1
CA2300406A1 CA002300406A CA2300406A CA2300406A1 CA 2300406 A1 CA2300406 A1 CA 2300406A1 CA 002300406 A CA002300406 A CA 002300406A CA 2300406 A CA2300406 A CA 2300406A CA 2300406 A1 CA2300406 A1 CA 2300406A1
Authority
CA
Canada
Prior art keywords
electrode
sample
current
liquid
oxidised
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002300406A
Other languages
French (fr)
Other versions
CA2300406C (en
Inventor
Ian Andrew Maxwell
Thomas William Beck
Alastair Mcindoe Hodges
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LifeScan Inc
Original Assignee
Usf Filtration And Separations Group Inc.
Ian Andrew Maxwell
Thomas William Beck
Alastair Mcindoe Hodges
Lifescan, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Usf Filtration And Separations Group Inc., Ian Andrew Maxwell, Thomas William Beck, Alastair Mcindoe Hodges, Lifescan, Inc. filed Critical Usf Filtration And Separations Group Inc.
Publication of CA2300406A1 publication Critical patent/CA2300406A1/en
Application granted granted Critical
Publication of CA2300406C publication Critical patent/CA2300406C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/416—Systems
    • G01N27/4166—Systems measuring a particular property of an electrolyte
    • G01N27/4168—Oxidation-reduction potential, e.g. for chlorination of water
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/00029—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor provided with flat sample substrates, e.g. slides

Abstract

A method for estimating the concentration of a reduced (or oxidised) form of a redox species in a liquid comprises contacting an area of a first electrode (2) with a sample (5) of the liquid, contacting the sample (5) with a second electrode (2) spaced apart from the first (2), applying a potential between the electrodes while the electrodes are sufficiently closely spaced that reaction products formed at each electrode diffuse to the other electrode while the potential is applied, measuring or estimating a value indicative of the change in current as a function of time and a value indicative of the steady state current, and determining from said volume, said current as a function of time, and said steady state current the concentration of reduced (or oxidised) form of the species in the liquid sample.
CA002300406A 1997-08-13 1998-08-13 Method and apparatus for automatic analysis Expired - Fee Related CA2300406C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPO8558A AUPO855897A0 (en) 1997-08-13 1997-08-13 Automatic analysing apparatus II
AUPO8558 1997-08-13
PCT/AU1998/000642 WO1999009404A1 (en) 1997-08-13 1998-08-13 Method and apparatus for automatic analysis

Publications (2)

Publication Number Publication Date
CA2300406A1 true CA2300406A1 (en) 1999-02-25
CA2300406C CA2300406C (en) 2007-01-09

Family

ID=3802847

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002300406A Expired - Fee Related CA2300406C (en) 1997-08-13 1998-08-13 Method and apparatus for automatic analysis

Country Status (8)

Country Link
US (3) US6325917B1 (en)
EP (1) EP1004019B1 (en)
JP (1) JP3691760B2 (en)
AU (1) AUPO855897A0 (en)
CA (1) CA2300406C (en)
DE (1) DE69840330D1 (en)
ES (1) ES2319343T3 (en)
WO (1) WO1999009404A1 (en)

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Publication number Publication date
JP2001516025A (en) 2001-09-25
EP1004019A4 (en) 2007-06-27
EP1004019B1 (en) 2008-12-10
US20050126931A1 (en) 2005-06-16
US20020117404A1 (en) 2002-08-29
EP1004019A1 (en) 2000-05-31
CA2300406C (en) 2007-01-09
ES2319343T3 (en) 2009-05-06
US6852212B2 (en) 2005-02-08
WO1999009404A1 (en) 1999-02-25
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US6325917B1 (en) 2001-12-04

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