DE2554803C2 - Elektrochemisches Analyseverfahren sowie Vorrichtung zur Durchführung des Verfahrens - Google Patents
Elektrochemisches Analyseverfahren sowie Vorrichtung zur Durchführung des VerfahrensInfo
- Publication number
- DE2554803C2 DE2554803C2 DE2554803A DE2554803A DE2554803C2 DE 2554803 C2 DE2554803 C2 DE 2554803C2 DE 2554803 A DE2554803 A DE 2554803A DE 2554803 A DE2554803 A DE 2554803A DE 2554803 C2 DE2554803 C2 DE 2554803C2
- Authority
- DE
- Germany
- Prior art keywords
- electrolyte
- substance
- measuring
- sample
- output signal
- 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
- 238000000034 method Methods 0.000 title claims description 22
- 238000000840 electrochemical analysis Methods 0.000 title claims description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 74
- 239000003792 electrolyte Substances 0.000 claims description 53
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 38
- 239000001569 carbon dioxide Substances 0.000 claims description 37
- 238000006243 chemical reaction Methods 0.000 claims description 23
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 20
- 239000003153 chemical reaction reagent Substances 0.000 claims description 19
- 229910052709 silver Inorganic materials 0.000 claims description 14
- 239000004332 silver Substances 0.000 claims description 14
- 239000000126 substance Substances 0.000 claims description 14
- 239000008280 blood Substances 0.000 claims description 10
- 210000004369 blood Anatomy 0.000 claims description 10
- -1 silver ions Chemical class 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 2
- 230000000737 periodic effect Effects 0.000 claims 1
- 239000000523 sample Substances 0.000 description 33
- 238000005259 measurement Methods 0.000 description 25
- 239000012528 membrane Substances 0.000 description 12
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 11
- 239000007788 liquid Substances 0.000 description 10
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 6
- 238000004448 titration Methods 0.000 description 6
- 239000002699 waste material Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000003513 alkali Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 238000003869 coulometry Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 229910021607 Silver chloride Inorganic materials 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000002696 acid base indicator Substances 0.000 description 2
- 239000012445 acidic reagent Substances 0.000 description 2
- 238000011088 calibration curve Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 229920006332 epoxy adhesive Polymers 0.000 description 2
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 description 2
- 239000010808 liquid waste Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000012488 sample solution Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 206010002091 Anaesthesia Diseases 0.000 description 1
- FDEQQCOTLPPCAO-UHFFFAOYSA-N Cl.OC(O)=O Chemical compound Cl.OC(O)=O FDEQQCOTLPPCAO-UHFFFAOYSA-N 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000037005 anaesthesia Effects 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000003637 basic solution Substances 0.000 description 1
- GTKRFUAGOKINCA-UHFFFAOYSA-M chlorosilver;silver Chemical compound [Ag].[Ag]Cl GTKRFUAGOKINCA-UHFFFAOYSA-M 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000000502 dialysis Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 229940037395 electrolytes Drugs 0.000 description 1
- 238000011067 equilibration Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 230000004199 lung function Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 1
- 235000015497 potassium bicarbonate Nutrition 0.000 description 1
- 239000011736 potassium bicarbonate Substances 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- 238000003918 potentiometric titration Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000000682 scanning probe acoustic microscopy Methods 0.000 description 1
- 210000002966 serum Anatomy 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/483—Physical analysis of biological material
- G01N33/487—Physical analysis of biological material of liquid biological material
- G01N33/49—Blood
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/19—Halogen containing
- Y10T436/193333—In aqueous solution
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/20—Oxygen containing
- Y10T436/204998—Inorganic carbon compounds
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Chemical & Material Sciences (AREA)
- Hematology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Urology & Nephrology (AREA)
- Ecology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Biophysics (AREA)
- Molecular Biology (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Measuring Oxygen Concentration In Cells (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/586,435 US4003705A (en) | 1975-06-12 | 1975-06-12 | Analysis apparatus and method of measuring rate of change of electrolyte pH |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2554803A1 DE2554803A1 (de) | 1977-03-10 |
| DE2554803C2 true DE2554803C2 (de) | 1986-01-23 |
Family
ID=24345710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2554803A Expired DE2554803C2 (de) | 1975-06-12 | 1975-12-05 | Elektrochemisches Analyseverfahren sowie Vorrichtung zur Durchführung des Verfahrens |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US4003705A (en:Method) |
| JP (1) | JPS5841486Y2 (en:Method) |
| AU (1) | AU505517B2 (en:Method) |
| CH (1) | CH611422A5 (en:Method) |
| DE (1) | DE2554803C2 (en:Method) |
| DK (1) | DK155765C (en:Method) |
| FR (1) | FR2314495A1 (en:Method) |
| SE (1) | SE430728B (en:Method) |
| ZA (1) | ZA763369B (en:Method) |
Families Citing this family (55)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4170523A (en) * | 1976-11-04 | 1979-10-09 | Beckman Instruments, Inc. | Method for checking isolation between titration and electrochemical measuring systems of a chemical analyzer |
| NL7708564A (nl) * | 1977-08-03 | 1979-02-06 | Philips Nv | Inrichting voor enzymatische analyse. |
| US4209299A (en) * | 1978-02-21 | 1980-06-24 | The Regents Of The University Of California | Method and apparatus for determination of volatile electrolytes |
| US4271001A (en) * | 1978-03-23 | 1981-06-02 | Asahi Kasei Kogyo Kabushiki Kaisha | Apparatus for measuring membrane characteristics of vesicles |
| US4244800A (en) * | 1979-08-23 | 1981-01-13 | The United States Of America As Represented By The United States Department Of Energy | Apparatus for use in rapid and accurate controlled-potential coulometric analysis |
| US4353867A (en) * | 1980-09-30 | 1982-10-12 | Massimo Luzzana | Method and apparatus for the determination of substances in biological solutions by differential pH measurement |
| US4518477A (en) * | 1982-02-03 | 1985-05-21 | Orbisphere Corporation Wilmington | Thermal protection for electroanalytical cell and amperometric probe |
| US4585542A (en) * | 1982-02-03 | 1986-04-29 | Orbisphere Corporation Wilmington, Succursale De Collonge-Bellerive | Thermal protection method for electroanalytical cell and amperometric probe |
| US4711703A (en) * | 1982-02-03 | 1987-12-08 | Orbisphere Corporation Wilmington, Succursale De Collonge-Bellerive | Thermal protection method for electroanalytical cell |
| US4490234A (en) * | 1982-02-22 | 1984-12-25 | Beckman Instruments, Inc. | Method for measuring ionic concentration utilizing an ion-sensing electrode |
| US5415165A (en) * | 1986-02-27 | 1995-05-16 | Mountpelier Investments | Tonometric catheter combination |
| US5526809A (en) * | 1982-03-22 | 1996-06-18 | Mountpelier Investments, S.A. | Hollow viscous and soild organ tonometry |
| US4643192A (en) * | 1982-03-22 | 1987-02-17 | Regents Of The University Of Michigan | Hollow viscus tonometry |
| US6010453A (en) * | 1982-03-22 | 2000-01-04 | Instrumentarium Corporation | Tonometric catheter combination |
| US4701252A (en) * | 1982-06-16 | 1987-10-20 | Matsushita Electric Industrial Co., Ltd. | Dissolved gas and ion measuring electrode system |
| FR2549964B1 (fr) * | 1983-07-29 | 1985-12-20 | Claeys Luck | Methode et appareil pour mesure de l'activite tampon acido-basique des semences en vue de l'exploration metabolique |
| US4533456A (en) * | 1984-04-05 | 1985-08-06 | Critikon | Oxygen sensor for rapid blood gas analysis |
| GB8512796D0 (en) * | 1985-05-21 | 1985-06-26 | Bellhouse Brian John | Testing liquids |
| FI80800C (fi) * | 1986-10-03 | 1990-07-10 | Kone Oy | Foerfarande foer bestaemning av den totala karbonathalten speciellt i en biologisk vaetska. |
| US4801551A (en) * | 1986-10-06 | 1989-01-31 | Westinghouse Electric Corp. | Rugged dissolved carbon dioxide monitor for high purity water |
| US4822474A (en) * | 1987-04-30 | 1989-04-18 | Pennwalt Corporation | Residual analyzer assembly |
| JPH0736274Y2 (ja) * | 1987-05-15 | 1995-08-16 | ベックマン インスツルメンツ インコーポレーテッド | 改良フローセル |
| US4920056A (en) * | 1988-02-19 | 1990-04-24 | The Dow Chemical Company | Apparatus and method for automated microbatch reaction |
| IT1226234B (it) * | 1988-07-08 | 1990-12-27 | Instrumentation Lab Spa | Cella elettrochimica per misurare l'attivita' ionica in una soluzionee metodo per il suo impiego |
| US5456251A (en) | 1988-08-26 | 1995-10-10 | Mountpelier Investments, S.A. | Remote sensing tonometric catheter apparatus and method |
| US5130010A (en) * | 1989-03-13 | 1992-07-14 | Beckman Instruments, Inc. | Salt bridge for analytical chemistry system |
| GB8927377D0 (en) | 1989-12-04 | 1990-01-31 | Univ Edinburgh | Improvements in and relating to amperometric assays |
| US5292423A (en) * | 1991-04-09 | 1994-03-08 | New Mexico State University Technology Transfer Corp. | Method and apparatus for trace metal testing |
| US5192416A (en) * | 1991-04-09 | 1993-03-09 | New Mexico State University Technology Transfer Corporation | Method and apparatus for batch injection analysis |
| US5194814A (en) * | 1991-05-22 | 1993-03-16 | Tremetrics, Inc. | Electrolytic conductivity detector |
| US5230785A (en) * | 1991-05-31 | 1993-07-27 | Poolchem, Inc. | Method and apparatus for analysis of swimming pool water and analytical cell utilized therein |
| US5396178A (en) * | 1992-05-18 | 1995-03-07 | Dober Chemical Corporation | Apparatus and method for determining that equipment is clean |
| US5433216A (en) * | 1993-06-14 | 1995-07-18 | Mountpelier Investments, S.A. | Intra-abdominal pressure measurement apparatus and method |
| AU2272895A (en) * | 1994-03-22 | 1995-10-09 | Intelligent Monitoring Systems | Detecting and classifying contaminants in water |
| SE510733C2 (sv) * | 1995-01-03 | 1999-06-21 | Chemel Ab | Kemisk sensor baserad på utbytbar igenkänningskomponent samt användning därav |
| US5676820A (en) * | 1995-02-03 | 1997-10-14 | New Mexico State University Technology Transfer Corp. | Remote electrochemical sensor |
| US5942103A (en) * | 1995-02-03 | 1999-08-24 | New Mexico State University Technology Transfer Corporation | Renewable-reagent electrochemical sensor |
| US5633169A (en) * | 1995-10-27 | 1997-05-27 | Nova Biomedical Corporation | Measurement of carbon dioxide in blood |
| GB2312750A (en) * | 1996-05-02 | 1997-11-05 | Univ Degli Studi Milano | Differential pH measurement apparatus |
| US5885533A (en) * | 1996-05-20 | 1999-03-23 | Sendx Medical, Inc. | Integral fluid and waste container for blood analyzer |
| US5777202A (en) * | 1996-05-20 | 1998-07-07 | Sendx Medical, Inc. | Reference solution container having improved gas retention |
| US5913232A (en) * | 1996-05-20 | 1999-06-15 | Sendx Medical, Inc. | reference solution container for blood gas/electrolyte measuring system |
| US5980830A (en) * | 1996-05-20 | 1999-11-09 | Sendx Medical, Inc. | Portable modular blood analyzer with simplified fluid handling sequence |
| US6306285B1 (en) | 1997-04-08 | 2001-10-23 | California Institute Of Technology | Techniques for sensing methanol concentration in aqueous environments |
| CA2313795A1 (en) * | 1997-12-11 | 1999-06-17 | Peter Barrington Long | Sensor devices and analytical method |
| US6602401B1 (en) * | 2000-11-01 | 2003-08-05 | Rosemount Analytical Inc. | Amperometric sensor for low level dissolved oxygen with self-depleting sensor design |
| US20040229108A1 (en) * | 2002-11-08 | 2004-11-18 | Valdez Thomas I. | Anode structure for direct methanol fuel cell |
| US7282291B2 (en) * | 2002-11-25 | 2007-10-16 | California Institute Of Technology | Water free proton conducting membranes based on poly-4-vinylpyridinebisulfate for fuel cells |
| US20060136555A1 (en) * | 2004-05-21 | 2006-06-22 | Bea Systems, Inc. | Secure service oriented architecture |
| US7534394B1 (en) * | 2005-07-11 | 2009-05-19 | The United States Of America As Represented By The Secretary Of The Navy | Potentiometric titration method for quantitative determination of hydrogen peroxide |
| US8366895B2 (en) * | 2006-03-23 | 2013-02-05 | Hach Company | Differential pH probe |
| US20080120827A1 (en) * | 2006-09-06 | 2008-05-29 | Hach Company | Method for manufacturing a differential pH probe |
| BRPI1006981A2 (pt) * | 2009-01-26 | 2016-04-12 | Mi Llc | unidade de titulação de capacidade de troca de cátion |
| US9297797B2 (en) * | 2009-07-01 | 2016-03-29 | Beckman Coulter, Inc. | Ion selective electrode module for clinical diagnostics |
| US8945936B2 (en) | 2011-04-06 | 2015-02-03 | Fresenius Medical Care Holdings, Inc. | Measuring chemical properties of a sample fluid in dialysis systems |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK68815C (da) * | 1946-01-31 | 1949-03-28 | Oscar Michael Dr Phi Henriques | Apparat til elektrometrisk titrering. |
| US2878106A (en) * | 1955-06-08 | 1959-03-17 | E H Sargent & Co | Automatic differential potentiometric titrator |
| DK100976C (da) * | 1960-01-25 | 1965-02-08 | Beckman Instruments Inc | Analytisk elektrode. |
| US3296098A (en) * | 1962-01-15 | 1967-01-03 | Beckman Instruments Inc | Method and apparatus for gas analysis |
| GB1000625A (en) * | 1963-02-13 | 1965-08-11 | Beckman Instruments Inc | Gas analysis |
| DE1233173B (de) * | 1963-08-14 | 1967-01-26 | Basf Ag | Galvanisches Element fuer die amperometrische Bestimmung von oxydierbaren Fluessigkeiten oder Gasen |
| US3503861A (en) * | 1966-03-21 | 1970-03-31 | Emilio Volpe | Apparatus for electrochemical analyses |
| US3510421A (en) * | 1967-06-12 | 1970-05-05 | Honeywell Inc | Polarographic cell |
| US3577332A (en) * | 1967-07-12 | 1971-05-04 | Beckman Instruments Inc | Polarographic cell |
| US3551109A (en) * | 1967-12-13 | 1970-12-29 | Harald Dahms | Method and apparatus for the titration of chloride and bicarbonate in serum |
| AT278710B (de) * | 1968-04-30 | 1970-02-10 | H C Hans Dipl Ing Dr Dr List | Meßeinrichtung zur Bestimmung des pH-Wertes einer Blutprobe |
| US3707455A (en) * | 1968-07-15 | 1972-12-26 | Ibm | Measuring system |
| GB1249403A (en) * | 1968-11-08 | 1971-10-13 | Beckman Instruments Inc | Gas analysis |
| US3701716A (en) * | 1969-04-15 | 1972-10-31 | Beckman Instruments Inc | Liquid analysis apparatus |
| US3709796A (en) * | 1970-06-05 | 1973-01-09 | American Limnetics Instr Inc | Method of using self-compensating electrode system |
| GB1337829A (en) * | 1970-08-21 | 1973-11-21 | Beckman Instruments Inc | Electrochemical reference electrode |
| US3765841A (en) * | 1971-08-06 | 1973-10-16 | Beckman Instruments Inc | Method and apparatus for chemical analysis |
| US3767552A (en) * | 1971-10-06 | 1973-10-23 | Teledyne Ind | Gas analyzer |
| CS154018B1 (en:Method) * | 1971-10-19 | 1974-03-29 | ||
| US3769178A (en) * | 1972-04-27 | 1973-10-30 | Rothermel Ass Inc | Method and apparatus for end point detection in potentiometric titration |
| DE2320193A1 (de) * | 1973-04-19 | 1974-11-14 | Du Pont | Verfahren zum selbsttaetigen bestimmen des endpunktes einer potentiometrischen titration |
| US3912613A (en) * | 1973-09-17 | 1975-10-14 | Rudolph L Heuser | Two-electrode gas analysis system for electrically sensing and controlling redox reactions |
-
1975
- 1975-06-12 US US05/586,435 patent/US4003705A/en not_active Expired - Lifetime
- 1975-12-05 DE DE2554803A patent/DE2554803C2/de not_active Expired
-
1976
- 1976-05-28 SE SE7606076A patent/SE430728B/xx not_active IP Right Cessation
- 1976-06-07 AU AU14682/76A patent/AU505517B2/en not_active Expired
- 1976-06-07 ZA ZA763369A patent/ZA763369B/xx unknown
- 1976-06-11 DK DK263576A patent/DK155765C/da not_active IP Right Cessation
- 1976-06-11 FR FR7617852A patent/FR2314495A1/fr active Granted
- 1976-06-11 CH CH744576A patent/CH611422A5/xx not_active IP Right Cessation
- 1976-06-11 JP JP1976075187U patent/JPS5841486Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| AU505517B2 (en) | 1979-11-22 |
| SE430728B (sv) | 1983-12-05 |
| JPS5211387U (en:Method) | 1977-01-26 |
| JPS5841486Y2 (ja) | 1983-09-19 |
| FR2314495B1 (en:Method) | 1981-10-23 |
| AU1468276A (en) | 1977-12-15 |
| SE7606076L (sv) | 1976-12-13 |
| FR2314495A1 (fr) | 1977-01-07 |
| ZA763369B (en) | 1977-05-25 |
| CH611422A5 (en:Method) | 1979-05-31 |
| DK263576A (da) | 1976-12-13 |
| US4003705A (en) | 1977-01-18 |
| DK155765B (da) | 1989-05-08 |
| DE2554803A1 (de) | 1977-03-10 |
| DK155765C (da) | 1989-10-23 |
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