GB2215846B - Method and apparatus for measuring the type and concentration of ion species in liquids - Google Patents

Method and apparatus for measuring the type and concentration of ion species in liquids

Info

Publication number
GB2215846B
GB2215846B GB8806917A GB8806917A GB2215846B GB 2215846 B GB2215846 B GB 2215846B GB 8806917 A GB8806917 A GB 8806917A GB 8806917 A GB8806917 A GB 8806917A GB 2215846 B GB2215846 B GB 2215846B
Authority
GB
United Kingdom
Prior art keywords
liquids
concentration
measuring
apparatus
type
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.)
Expired - Fee Related
Application number
GB8806917A
Other versions
GB8806917D0 (en
GB2215846A (en
Inventor
Kenneth Board
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB8806917A priority Critical patent/GB2215846B/en
Publication of GB8806917D0 publication Critical patent/GB8806917D0/en
Publication of GB2215846A publication Critical patent/GB2215846A/en
Application granted granted Critical
Publication of GB2215846B publication Critical patent/GB2215846B/en
Anticipated expiration legal-status Critical
Application status is Expired - Fee Related legal-status Critical

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/18Water
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means
    • G01N27/02Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means by investigating the impedance of the material
    • G01N27/22Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means by investigating the impedance of the material by investigating capacitance
    • G01N27/228Circuits therefor
GB8806917A 1988-03-23 1988-03-23 Method and apparatus for measuring the type and concentration of ion species in liquids Expired - Fee Related GB2215846B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8806917A GB2215846B (en) 1988-03-23 1988-03-23 Method and apparatus for measuring the type and concentration of ion species in liquids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8806917A GB2215846B (en) 1988-03-23 1988-03-23 Method and apparatus for measuring the type and concentration of ion species in liquids

Publications (3)

Publication Number Publication Date
GB8806917D0 GB8806917D0 (en) 1988-04-27
GB2215846A GB2215846A (en) 1989-09-27
GB2215846B true GB2215846B (en) 1992-04-22

Family

ID=10633963

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8806917A Expired - Fee Related GB2215846B (en) 1988-03-23 1988-03-23 Method and apparatus for measuring the type and concentration of ion species in liquids

Country Status (1)

Country Link
GB (1) GB2215846B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6638415B1 (en) 1995-11-16 2003-10-28 Lifescan, Inc. Antioxidant sensor
USRE42567E1 (en) 1995-11-16 2011-07-26 Lifescan, Inc. Electrochemical cell
USRE44330E1 (en) 1995-06-19 2013-07-02 Lifescan Inc. Electrochemical cell
US8486243B2 (en) 2001-10-10 2013-07-16 Lifescan, Inc. Electrochemical cell

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4122408A1 (en) * 1991-07-06 1993-01-07 Basf Ag Capacitive measuring chemical sensor system
AUPN363995A0 (en) 1995-06-19 1995-07-13 Memtec Limited Electrochemical cell
WO1997021094A1 (en) * 1995-12-01 1997-06-12 Innogenetics N.V. Impedimetric detection system and method of production thereof
US6475360B1 (en) 1998-03-12 2002-11-05 Lifescan, Inc. Heated electrochemical cell
US6878251B2 (en) 1998-03-12 2005-04-12 Lifescan, Inc. Heated electrochemical cell
US6652734B1 (en) 1999-03-16 2003-11-25 Lifescan, Inc. Sensor with improved shelf life
US6835552B2 (en) * 2000-12-14 2004-12-28 The Regents Of The University Of California Impedance measurements for detecting pathogens attached to antibodies

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2085592A (en) * 1981-09-09 1982-04-28 Westinghouse Electric Corp Conductivity Cell
US4339719A (en) * 1980-07-30 1982-07-13 Electric Power Research Institute, Inc. Conductivity sensor for monitoring corrodents being deposited in a steam turbine
EP0084874A1 (en) * 1982-01-23 1983-08-03 Holger Dr. Kiesewetter Apparatus for determining the hematocrit ratio
GB2123965A (en) * 1982-07-10 1984-02-08 Heinz Himmelberg A cannular sensor and a method of measuring polarographic PO2 using the sensor
WO1987006009A1 (en) * 1986-04-01 1987-10-08 The Johns Hopkins University/Applied Physics Labor Capacitive chemical sensor for detecting certain analytes, including hydrocarbons in a liquid medium

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4339719A (en) * 1980-07-30 1982-07-13 Electric Power Research Institute, Inc. Conductivity sensor for monitoring corrodents being deposited in a steam turbine
GB2085592A (en) * 1981-09-09 1982-04-28 Westinghouse Electric Corp Conductivity Cell
EP0084874A1 (en) * 1982-01-23 1983-08-03 Holger Dr. Kiesewetter Apparatus for determining the hematocrit ratio
GB2123965A (en) * 1982-07-10 1984-02-08 Heinz Himmelberg A cannular sensor and a method of measuring polarographic PO2 using the sensor
WO1987006009A1 (en) * 1986-04-01 1987-10-08 The Johns Hopkins University/Applied Physics Labor Capacitive chemical sensor for detecting certain analytes, including hydrocarbons in a liquid medium

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE44330E1 (en) 1995-06-19 2013-07-02 Lifescan Inc. Electrochemical cell
US8597480B2 (en) 1995-06-19 2013-12-03 Lifescan, Inc. Electrochemical cell
US6638415B1 (en) 1995-11-16 2003-10-28 Lifescan, Inc. Antioxidant sensor
USRE42567E1 (en) 1995-11-16 2011-07-26 Lifescan, Inc. Electrochemical cell
US9075004B2 (en) 1996-06-19 2015-07-07 Lifescan, Inc. Electrochemical cell
US8486243B2 (en) 2001-10-10 2013-07-16 Lifescan, Inc. Electrochemical cell
US8801907B2 (en) 2001-10-10 2014-08-12 Lifescan, Inc. Electrochemical cell

Also Published As

Publication number Publication date
GB8806917D0 (en) 1988-04-27
GB2215846A (en) 1989-09-27

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19970323