GB1473715A - Polarographic cell - Google Patents
Polarographic cellInfo
- Publication number
- GB1473715A GB1473715A GB4043274A GB4043274A GB1473715A GB 1473715 A GB1473715 A GB 1473715A GB 4043274 A GB4043274 A GB 4043274A GB 4043274 A GB4043274 A GB 4043274A GB 1473715 A GB1473715 A GB 1473715A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glass
- electrode
- membrane
- electrolyte
- porous
- 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
Links
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
- G01N27/48—Systems using polarography, i.e. measuring changes in current under a slowly-varying voltage
Abstract
1473715 Electro-chemical gas detector PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 17 Sept 1974 [20 Sept 1973] 40432/74 Heading G1N A cell for measuring the partial pressure of a gas (preferably of oxygen in a fluid), comprises a detection and a reference electrode immersed in an electrolyte and all separated from the fluid by an insulating membrane permeable to the gas to be measured and wherein the electrolyte is at least partially immobilized by absorption thereof in a rigid, insulating, porous material. The detection electrode at least comprises a thin coating on the rigid material and the membrane is partly provided on the electrode and partly on the rigid material, which may be sintered glass or a sintered ceramic e.g. alumina. The membrane is preferably PTFE deposited by high frequency cathode sputtering but may be polyethylene or polypropylene. It has a thickness of less than 0.5ÁM. The oxygen cell shown has a sintered glass disc 11 surrounded by a solid glass annulus 12 Gold detector electrode 16 and silver reference electrode 17 are deposited on the surface of the glass ports (which are bonded together) and the electrodes and glass surface are covered with PTFE membrane 18. KC 1 electrolyte is absorbed in the porous glass 11 and the remainder is retained by glass disc 19. Enamelled leads, 14, 15 connect with the electrodes. In an alternative embodiment a porous alumina cylinder with a central bore containing the reference electrode is used, the detecting electrode being formed on the outside with longitudinal, transverse or helical grooves.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7333743A FR2245248A5 (en) | 1973-09-20 | 1973-09-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1473715A true GB1473715A (en) | 1977-05-18 |
Family
ID=9125315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4043274A Expired GB1473715A (en) | 1973-09-20 | 1974-09-17 | Polarographic cell |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS5550299B2 (en) |
| CA (1) | CA1028006A (en) |
| CH (1) | CH575600A5 (en) |
| DE (1) | DE2443863C2 (en) |
| FR (1) | FR2245248A5 (en) |
| GB (1) | GB1473715A (en) |
| IT (1) | IT1033094B (en) |
| NL (1) | NL7412285A (en) |
| SE (1) | SE394327B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1571282A (en) * | 1976-03-11 | 1980-07-09 | City Tech | Gas sensor |
| US4076596A (en) * | 1976-10-07 | 1978-02-28 | Leeds & Northrup Company | Apparatus for electrolytically determining a species in a fluid and method of use |
| US4273636A (en) * | 1977-05-26 | 1981-06-16 | Kiyoo Shimada | Selective chemical sensitive field effect transistor transducers |
| NL7801867A (en) * | 1978-02-20 | 1979-08-22 | Philips Nv | DEVICE FOR THE TRANSCUTANEOUS MEASUREMENT OF THE PARTIAL OXYGEN PRESSURE IN BLOOD. |
| JPS56115949A (en) * | 1980-02-18 | 1981-09-11 | Horiba Ltd | Electrode covered with partition film |
| JPS5717850A (en) * | 1980-07-05 | 1982-01-29 | Horiba Ltd | Production of diaphragm for diaphragm oxygen electrode |
| JPS62126767U (en) * | 1986-10-20 | 1987-08-11 | ||
| EP2081018A1 (en) * | 2008-01-18 | 2009-07-22 | F.Hoffmann-La Roche Ag | Gas sensor with microporous electrolyte layer |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3083706A (en) * | 1960-07-06 | 1963-04-02 | Charles F Woodhouse | Apparatus and method for measuring oxygen tension in bone |
| US3227643A (en) * | 1962-11-13 | 1966-01-04 | Univ North Carolina | Oxygen detector |
| FR2147344A5 (en) * | 1970-12-31 | 1973-03-09 | Hoffmann La Roche |
-
1973
- 1973-09-20 FR FR7333743A patent/FR2245248A5/fr not_active Expired
-
1974
- 1974-09-13 DE DE2443863A patent/DE2443863C2/en not_active Expired
- 1974-09-17 NL NL7412285A patent/NL7412285A/en unknown
- 1974-09-17 IT IT27385/74A patent/IT1033094B/en active
- 1974-09-17 CH CH1259274A patent/CH575600A5/xx not_active IP Right Cessation
- 1974-09-17 GB GB4043274A patent/GB1473715A/en not_active Expired
- 1974-09-17 SE SE7411655A patent/SE394327B/en unknown
- 1974-09-18 JP JP10682574A patent/JPS5550299B2/ja not_active Expired
- 1974-09-19 CA CA209,579A patent/CA1028006A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH575600A5 (en) | 1976-05-14 |
| JPS5550299B2 (en) | 1980-12-17 |
| DE2443863C2 (en) | 1984-01-12 |
| FR2245248A5 (en) | 1975-04-18 |
| IT1033094B (en) | 1979-07-10 |
| JPS5059091A (en) | 1975-05-22 |
| SE7411655L (en) | 1975-03-21 |
| NL7412285A (en) | 1975-03-24 |
| SE394327B (en) | 1977-06-20 |
| DE2443863A1 (en) | 1975-04-10 |
| CA1028006A (en) | 1978-03-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |