FR2453405A1 - Biological sample opacity meter - uses several photometric measurements to compensate for irregularities in vessels - Google Patents
Biological sample opacity meter - uses several photometric measurements to compensate for irregularities in vesselsInfo
- Publication number
- FR2453405A1 FR2453405A1 FR7909247A FR7909247A FR2453405A1 FR 2453405 A1 FR2453405 A1 FR 2453405A1 FR 7909247 A FR7909247 A FR 7909247A FR 7909247 A FR7909247 A FR 7909247A FR 2453405 A1 FR2453405 A1 FR 2453405A1
- Authority
- FR
- France
- Prior art keywords
- irregularities
- vessels
- compensate
- biological sample
- motor
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/251—Colorimeters; Construction thereof
- G01N21/253—Colorimeters; Construction thereof for batch operation, i.e. multisample apparatus
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/12—Circuits of general importance; Signal processing
- G01N2201/124—Sensitivity
- G01N2201/1245—Averaging several measurements
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
- Optical Measuring Cells (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Photometry is used to determine the transparency or opacity of a medi in various biological and bacteriological studies. This allows the state of a phenomena to be determined. Irregularities in existing vessels are compensated for by making several different measurements. The different test tubes (1) are retained in a carrier comprising an upper (3) and lower (4) horizontal plates. Synchronised eccentric drive systems (15) comprising a motor (19) and vertical shafts (17) communicate with the lower plate to agitate the tubes. Fans (29) circulate air to maintain a uniform temperature consistent with the temp. of fluid flowing in sealed chambers (27). A photometric measuring system is carried by a carriage (33) which is moved when a motor (38) drives a pulley (39) around an axis (40). Two arms (45,46) carry luminous emitters (48) whose radiation passes via a tube to a phototransistor (49).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7909247A FR2453405B1 (en) | 1979-04-06 | 1979-04-06 | METHOD AND APPARATUS FOR PHOTOMETRICAL STUDY OF THE TRANSPARENCY OR OPACITY OF A MEDIUM |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7909247A FR2453405B1 (en) | 1979-04-06 | 1979-04-06 | METHOD AND APPARATUS FOR PHOTOMETRICAL STUDY OF THE TRANSPARENCY OR OPACITY OF A MEDIUM |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2453405A1 true FR2453405A1 (en) | 1980-10-31 |
FR2453405B1 FR2453405B1 (en) | 1982-08-06 |
Family
ID=9224242
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7909247A Expired FR2453405B1 (en) | 1979-04-06 | 1979-04-06 | METHOD AND APPARATUS FOR PHOTOMETRICAL STUDY OF THE TRANSPARENCY OR OPACITY OF A MEDIUM |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2453405B1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2521295A1 (en) * | 1982-02-05 | 1983-08-12 | Kone Oy | METHOD FOR THE PHOTOMETRIC MEASUREMENT OF LIQUIDS IN REACTION VASES, AND REACTION VASES FOR THE IMPLEMENTATION OF THE METHOD |
WO1999024160A1 (en) * | 1997-11-08 | 1999-05-20 | Chemspeed, Ltd. | Device for holding reaction vessels which can be thermally adjusted and agitated |
WO2014140451A1 (en) | 2013-03-12 | 2014-09-18 | Formulaction | Apparatus for analyzing phases of multiphase mixtures |
US10330596B1 (en) | 2018-03-27 | 2019-06-25 | King Saud University | Apparatus and method for testing the ability of materials to protect photolabile materials |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1138862A (en) * | 1955-10-27 | 1957-06-20 | Blood sedimentation curve recording device | |
DE1223174B (en) * | 1960-03-21 | 1966-08-18 | Solvay | Method and device for monitoring potentially explosive operating processes by photometric means |
US3544225A (en) * | 1967-12-13 | 1970-12-01 | Berkeley Scient Lab Inc | Peak reading optical density measuring system |
DE2418065A1 (en) * | 1974-04-13 | 1975-10-23 | Hellige Gmbh | Automatic blood sedimentation tester - produces pulses at the ends of specified time intervals |
US4004883A (en) * | 1975-07-11 | 1977-01-25 | G. D. Searle & Co. | Sensing, leveling and mixing apparatus |
US4118801A (en) * | 1976-11-05 | 1978-10-03 | Kraft Jack A | Rack for vessels and means for agitating the vessels in the rack |
US4125327A (en) * | 1975-11-17 | 1978-11-14 | Gradient Pty. Limited | Method and apparatus for simultaneously recording reaction times |
-
1979
- 1979-04-06 FR FR7909247A patent/FR2453405B1/en not_active Expired
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1138862A (en) * | 1955-10-27 | 1957-06-20 | Blood sedimentation curve recording device | |
DE1223174B (en) * | 1960-03-21 | 1966-08-18 | Solvay | Method and device for monitoring potentially explosive operating processes by photometric means |
US3544225A (en) * | 1967-12-13 | 1970-12-01 | Berkeley Scient Lab Inc | Peak reading optical density measuring system |
DE2418065A1 (en) * | 1974-04-13 | 1975-10-23 | Hellige Gmbh | Automatic blood sedimentation tester - produces pulses at the ends of specified time intervals |
US4004883A (en) * | 1975-07-11 | 1977-01-25 | G. D. Searle & Co. | Sensing, leveling and mixing apparatus |
US4125327A (en) * | 1975-11-17 | 1978-11-14 | Gradient Pty. Limited | Method and apparatus for simultaneously recording reaction times |
US4118801A (en) * | 1976-11-05 | 1978-10-03 | Kraft Jack A | Rack for vessels and means for agitating the vessels in the rack |
Non-Patent Citations (1)
Title |
---|
EXBK/66 * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2521295A1 (en) * | 1982-02-05 | 1983-08-12 | Kone Oy | METHOD FOR THE PHOTOMETRIC MEASUREMENT OF LIQUIDS IN REACTION VASES, AND REACTION VASES FOR THE IMPLEMENTATION OF THE METHOD |
WO1999024160A1 (en) * | 1997-11-08 | 1999-05-20 | Chemspeed, Ltd. | Device for holding reaction vessels which can be thermally adjusted and agitated |
US6558632B1 (en) | 1997-11-08 | 2003-05-06 | Chemspeed Ltd. | Device for holding reaction vessels which can be thermally adjusted and agitated |
WO2014140451A1 (en) | 2013-03-12 | 2014-09-18 | Formulaction | Apparatus for analyzing phases of multiphase mixtures |
FR3003351A1 (en) * | 2013-03-12 | 2014-09-19 | Formulaction | APPARATUS FOR ANALYZING PHASES OF POLYPHASIC MIXTURES |
US9581544B2 (en) | 2013-03-12 | 2017-02-28 | Formulaction | Apparatus for analyzing phases of multiphase mixtures |
US10330596B1 (en) | 2018-03-27 | 2019-06-25 | King Saud University | Apparatus and method for testing the ability of materials to protect photolabile materials |
Also Published As
Publication number | Publication date |
---|---|
FR2453405B1 (en) | 1982-08-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |