WO2004005909A3 - Reference electrode having a microfluidic flowing liquid junction and filter members - Google Patents

Reference electrode having a microfluidic flowing liquid junction and filter members Download PDF

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Publication number
WO2004005909A3
WO2004005909A3 PCT/US2003/021156 US0321156W WO2004005909A3 WO 2004005909 A3 WO2004005909 A3 WO 2004005909A3 US 0321156 W US0321156 W US 0321156W WO 2004005909 A3 WO2004005909 A3 WO 2004005909A3
Authority
WO
WIPO (PCT)
Prior art keywords
filter
junction member
nanochannels
reference electrode
pores
Prior art date
Application number
PCT/US2003/021156
Other languages
French (fr)
Other versions
WO2004005909A2 (en
WO2004005909A8 (en
Inventor
Scott T Broadley
Herbert P Silverman
Steven R Ragsdale
Ta-Yung Chen
Original Assignee
Broadley Technologies Corp
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
Priority claimed from US10/361,708 external-priority patent/US7025871B2/en
Application filed by Broadley Technologies Corp filed Critical Broadley Technologies Corp
Priority to AU2003256448A priority Critical patent/AU2003256448A1/en
Publication of WO2004005909A2 publication Critical patent/WO2004005909A2/en
Publication of WO2004005909A3 publication Critical patent/WO2004005909A3/en
Publication of WO2004005909A8 publication Critical patent/WO2004005909A8/en

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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
    • G01N27/28—Electrolytic cell components
    • G01N27/401—Salt-bridge leaks; Liquid junctions

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Molecular Biology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

A flowing junction reference electrode comprising a liquid junction member (210) matched with a filter. The junction member and the filter (202, 202’, 202’’) are situated between a reference electrolyte solution and a sample solution. An array of nanochannels (106) spans the junction member and provides fluid communication between the electrolyte solution and the sample solution. The filter is configured to allow a greater flux of electrolyte than that associated with the junction member. Preferably, the number of pores is greater than the number of nanochannels. The filter is preferably configured to have pores with an inner diameter that is the same or less than the inner diameter of the nanochannels. In some embodiment, the resistance of the filter is made lower relative to the resistance of the junction member by selecting suitable length, number, and inner diameter size for the pores of the filter relative to the nanochannels of the junction member.
PCT/US2003/021156 2002-07-03 2003-07-02 Reference electrode having a microfluidic flowing liquid junction and filter members WO2004005909A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003256448A AU2003256448A1 (en) 2002-07-03 2003-07-02 Reference electrode having a microfluidic flowing liquid junction and filter members

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US39410602P 2002-07-03 2002-07-03
US60/394,106 2002-07-03
US10/361,708 US7025871B2 (en) 1999-06-08 2003-02-06 Reference electrode having a microfluidic flowing liquid junction
US10/361,708 2003-02-06

Publications (3)

Publication Number Publication Date
WO2004005909A2 WO2004005909A2 (en) 2004-01-15
WO2004005909A3 true WO2004005909A3 (en) 2005-02-03
WO2004005909A8 WO2004005909A8 (en) 2005-05-19

Family

ID=30118097

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/021156 WO2004005909A2 (en) 2002-07-03 2003-07-02 Reference electrode having a microfluidic flowing liquid junction and filter members

Country Status (2)

Country Link
AU (1) AU2003256448A1 (en)
WO (1) WO2004005909A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070122313A1 (en) * 2005-11-30 2007-05-31 Zhiyong Li Nanochannel apparatus and method of fabricating
EP2736546A1 (en) 2011-07-29 2014-06-04 DSM IP Assets B.V. Medical device comprising a wetted hydrophilic coating

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1217657B (en) * 1962-06-29 1966-05-26 Hartmann & Braun Ag Reference electrode for pH measurement
GB2093193A (en) * 1981-02-12 1982-08-25 Corning Glass Works Reference Electrode with Internal Ion-selective Barrier
US4886505A (en) * 1985-06-07 1989-12-12 Becton, Dickinson And Company Antimicrobial surfaces and inhibition of microorganism growth thereby
EP0761094A1 (en) * 1995-09-01 1997-03-12 Calgon Corporation Anti-microbial compositions and uses thereof
WO2001075430A2 (en) * 2000-03-31 2001-10-11 The Foxboro Company Sensor for electrochemical measurement
US20010045357A1 (en) * 1999-06-08 2001-11-29 Scott Broadley Novel reference electrode having a microfluidic flowing liquid junction

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1217657B (en) * 1962-06-29 1966-05-26 Hartmann & Braun Ag Reference electrode for pH measurement
GB2093193A (en) * 1981-02-12 1982-08-25 Corning Glass Works Reference Electrode with Internal Ion-selective Barrier
US4886505A (en) * 1985-06-07 1989-12-12 Becton, Dickinson And Company Antimicrobial surfaces and inhibition of microorganism growth thereby
EP0761094A1 (en) * 1995-09-01 1997-03-12 Calgon Corporation Anti-microbial compositions and uses thereof
US20010045357A1 (en) * 1999-06-08 2001-11-29 Scott Broadley Novel reference electrode having a microfluidic flowing liquid junction
WO2001075430A2 (en) * 2000-03-31 2001-10-11 The Foxboro Company Sensor for electrochemical measurement

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
HULTEEN J C ET AL: "A GENERAL TEMPLATE-BASED METHOD FOR THE PREPARATION OF NANOMATERIALS", JOURNAL OF MATERIALS CHEMISTRY, THE ROYAL SOCIETY OF CHEMISTRY, CAMBRIDGE, GB, vol. 7, no. 7, 1 July 1997 (1997-07-01), pages 1075 - 1087, XP000703793, ISSN: 0959-9428 *
NISHIZAWA M ET AL: "METAL NANOTUBULE MEMBRANES WITH ELECTROCHEMICALLY SWITCHABLE ION-TRANSPORT SELECTIVITY", SCIENCE, AMERICAN ASSOCIATION FOR THE ADVANCEMENT OF SCIENCE,, US, vol. 268, 5 May 1995 (1995-05-05), pages 700 - 702, XP000946546, ISSN: 0036-8075 *
PETERS G: "A REFERENCE ELECTRODE WITH FREE-DIFFUSION LIQUID JUNCTION FOR ELECTROCHEMICAL MEASUREMENTS UNDER CHANGING PRESSURE CONDITIONS", ANALYTICAL CHEMISTRY, AMERICAN CHEMICAL SOCIETY. COLUMBUS, US, vol. 69, no. 13, 1 July 1997 (1997-07-01), pages 2362 - 2366, XP000696558, ISSN: 0003-2700 *

Also Published As

Publication number Publication date
WO2004005909A2 (en) 2004-01-15
AU2003256448A1 (en) 2004-01-23
WO2004005909A8 (en) 2005-05-19
AU2003256448A8 (en) 2004-01-23

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