IL43372A - Compact dynamic multistation photometer utilizing disposable cuvette rotor - Google Patents
Compact dynamic multistation photometer utilizing disposable cuvette rotorInfo
- Publication number
- IL43372A IL43372A IL43372A IL4337273A IL43372A IL 43372 A IL43372 A IL 43372A IL 43372 A IL43372 A IL 43372A IL 4337273 A IL4337273 A IL 4337273A IL 43372 A IL43372 A IL 43372A
- Authority
- IL
- Israel
- Prior art keywords
- rotor
- apertures
- base
- series
- sample analysis
- Prior art date
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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/03—Cuvette constructions
- G01N21/07—Centrifugal type cuvettes
Landscapes
- Physics & Mathematics (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)
- Optical Measuring Cells (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
Claims (9)
1. A compact fast analyzer of the rotary cuvette type comprising: (a) a power-driven cuvette rotor holder comprising a flat circular base, an annular, upstanding retaining rim integrally fixed to said base, and an axially extending up-standing pin fixed to said base within the radial confine of said rim; said base defining: i. a first series of axially extending apertures dis-posed in a circular array through said base within the radial confine of said rim. ii. a second series of axially extending apertures dis-posed in a circular array through said base without the radial confine of said rim, said apertures in said second series of apertures being equal in number to said apertures in said first series of apertures; (b) a removable cuvette rotor having a circular plate-like configuration disposed on said base within the confine of said rim, said rotor defining a circular array of sample analysis cuvettes in axial register with respective apertures in said first series of apertures; (c) a movable light source disposed above said cuvette rotor for providing a beam of light incident on said rotor assembly at a point corresponding to the radial position of said sample analysis cuvettes; (d) means for detecting light from said light source after it has passed through said sample analysis cuvettes, said means for detecting light generating an output signal proportional to the intensity of light detected; and (e) signal generating means disposed adjacent said -rotor holder for detecting the passage of apertures in said second series of apertures.
2. The fast analyzer of claim 1 wherein an adjustable filter holder containing a plurality of absorbance filters extends between said base and said means for detecting light from said light source after it has passed through said sample analysis cuvettes.
3. The fast analyzer of claim 1 further including means for rapidly braking rotation of said rotor holder and rotor.
4. The fast analyzer of claim 1 further including a thermistor mounted within said upstanding pin for measuring the temperature of said cuvette rotor and electrical slip rings in electrical communication with said thermistor af- fixed to said rotor holder.
5. The fast analyzer of claim 4 wherein said upstanding pin is located at a radial position corresponding to the radius of said first series of axially extending apertures and said sample analysis cuvettes, and wherein said thermistor is within said pin so as to be axially centered within said removable cuvette rotor when said rotor is disposed on said base within the confine of said rim.
6. The fast analyzer of claim 1 wherein said removable cuvette rotor defines: (a) first and second sets of radially oriented loading cavities disposed in concentric annular arrays; and (b) means for effecting centrifugal passage of fluid from said first and second sets of loading cavities to respective cuvettes in said circular array of sample analysis cuvettes.
7. The fast analyzer of claim 6 wherein said cuvette rotor is of laminated construction with a central opaque disk sandwiched between first and second transparent disks, said sets of first and second cavities comprising depressions in said opaque disk, and loading apertures being provided through said first transparent disk in axial register with respective cavities in said first and second sets of loading cavities.
8. The fast analyzer of claim 6 wherein said cuvette rotor further defines a central distribution chamber and a plurality of distribution passageways communicating between said distribution chamber and respective cuvettes in said circular array of sample analysis cuvettes.
9. The fast analyzer of claim 8 wherein each of said distribution passageways intersects with adjacent distribution passageways at an acute angle so as to form a serrated periphery about said distribution chamber.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US29578072A | 1972-10-06 | 1972-10-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
IL43372A0 IL43372A0 (en) | 1974-01-14 |
IL43372A true IL43372A (en) | 1976-07-30 |
Family
ID=23139207
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IL43372A IL43372A (en) | 1972-10-06 | 1973-10-04 | Compact dynamic multistation photometer utilizing disposable cuvette rotor |
Country Status (16)
Country | Link |
---|---|
US (1) | US3798459A (en) |
JP (2) | JPS4974094A (en) |
AT (1) | AT334115B (en) |
BE (1) | BE805458A (en) |
BR (1) | BR7307751D0 (en) |
CA (1) | CA988321A (en) |
CH (1) | CH572208A5 (en) |
DE (1) | DE2349927C3 (en) |
ES (1) | ES419308A1 (en) |
FR (1) | FR2202594A5 (en) |
GB (1) | GB1414885A (en) |
IL (1) | IL43372A (en) |
IN (1) | IN141136B (en) |
IT (1) | IT995557B (en) |
NL (1) | NL7313249A (en) |
SE (1) | SE385158B (en) |
Families Citing this family (90)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1501883A (en) * | 1973-05-08 | 1978-02-22 | Nat Res Dev | Devices for use in monitoring chemical reactions |
US3873217A (en) * | 1973-07-24 | 1975-03-25 | Atomic Energy Commission | Simplified rotor for fast analyzer of rotary cuvette type |
US3890101A (en) * | 1974-02-15 | 1975-06-17 | Us Energy | Collection ring for use in multiple-sample blood fractionation centrifugal rotors |
US3953172A (en) * | 1974-05-10 | 1976-04-27 | Union Carbide Corporation | Method and apparatus for assaying liquid materials |
US4123173A (en) * | 1976-06-09 | 1978-10-31 | Electro-Nucleonics, Inc. | Rotatable flexible cuvette arrays |
NL7706292A (en) * | 1976-06-09 | 1977-12-13 | Electro Nucleonics | BOWLS SERIES. |
US4035156A (en) * | 1977-01-21 | 1977-07-12 | The United States Of America As Represented By The United States Energy Research And Development Administration | Filter type rotor for multistation photometer |
US4226531A (en) * | 1977-08-29 | 1980-10-07 | Instrumentation Laboratory Inc. | Disposable multi-cuvette rotor |
US4314970A (en) * | 1980-08-27 | 1982-02-09 | Instrumentation Laboratory Inc. | Analysis system |
DE3044385A1 (en) * | 1980-11-25 | 1982-06-24 | Boehringer Mannheim Gmbh, 6800 Mannheim | METHOD FOR CARRYING OUT ANALYTICAL PROVISIONS AND ROTOR INSERT ELEMENT SUITABLE FOR THIS |
US4373812A (en) * | 1981-03-25 | 1983-02-15 | Instrumentation Laboratory Inc. | Cuvette assembly |
US4550084A (en) * | 1982-01-15 | 1985-10-29 | Allied Corporation | Analysis system |
US4446106A (en) * | 1982-01-15 | 1984-05-01 | Instrumentation Laboratory Inc. | Analysis system |
JPS58175457U (en) * | 1982-05-19 | 1983-11-24 | 橋詰 周 | centrifuge tube |
US4509856A (en) * | 1982-11-16 | 1985-04-09 | The United States Of America As Represented By The United States Department Of Energy | Rotor for centrifugal fast analyzers |
US4902479A (en) * | 1983-11-07 | 1990-02-20 | Fisher Scientific Company | Centrifugal analyzer rotor |
US4580896A (en) * | 1983-11-07 | 1986-04-08 | Allied Corporation | Multicuvette centrifugal analyzer rotor with annular recessed optical window channel |
DE3425008A1 (en) * | 1984-07-06 | 1986-02-06 | Boehringer Mannheim Gmbh, 6800 Mannheim | METHOD AND DEVICE FOR CARRYING OUT ANALYTICAL PROVISIONS |
US4580898A (en) * | 1984-05-31 | 1986-04-08 | Allied Corporation | Analytical system |
US4580897A (en) * | 1984-05-31 | 1986-04-08 | Allied Corporation | Centrifugal analyzer rotors |
IT1209604B (en) * | 1984-11-27 | 1989-08-30 | Instrumentation Lab Spa | METHOD AND EQUIPMENT FOR MEASUREMENT OF COAGULATION PARAMETERS. |
US5071625A (en) * | 1985-02-27 | 1991-12-10 | Fisher Scientific Company | Cuvette handling |
FR2578054B1 (en) * | 1985-02-28 | 1988-02-26 | Inovelf Sa | METHODS AND DEVICES FOR THE PREPARATION, PACKAGING AND USE OF REAGENT MEDIA |
US4680164A (en) * | 1985-07-18 | 1987-07-14 | Fisher Scientific Company | Centrifugal analyzer |
US4740472A (en) * | 1985-08-05 | 1988-04-26 | The United States Of America As Represented By The United States Department Of Energy | Method and apparatus for automated processing and aliquoting of whole blood samples for analysis in a centrifugal fast analyzer |
US4756883A (en) * | 1986-09-16 | 1988-07-12 | E. I. Du Pont De Nemours And Company | Analysis device |
US4762683A (en) * | 1986-09-16 | 1988-08-09 | E. I. Du Pont De Nemours And Company | Analysis device |
US4847205A (en) * | 1987-04-08 | 1989-07-11 | Martin Marietta Energy Systems, Inc. | Device and method for automated separation of a sample of whole blood into aliquots |
US4900446A (en) * | 1987-06-23 | 1990-02-13 | Large Scale Biology | Centrifugal fast chromatograph |
US4900435A (en) * | 1988-06-09 | 1990-02-13 | Large Scale Biolocy | Centrifugal fast chromatograph |
US6327031B1 (en) * | 1998-09-18 | 2001-12-04 | Burstein Technologies, Inc. | Apparatus and semi-reflective optical system for carrying out analysis of samples |
HUP0003152A3 (en) * | 1997-02-28 | 2002-09-30 | Burstein Lab Inc Irvine | Laboratory in a disk |
US6734401B2 (en) * | 2000-06-28 | 2004-05-11 | 3M Innovative Properties Company | Enhanced sample processing devices, systems and methods |
US6720187B2 (en) * | 2000-06-28 | 2004-04-13 | 3M Innovative Properties Company | Multi-format sample processing devices |
US6627159B1 (en) * | 2000-06-28 | 2003-09-30 | 3M Innovative Properties Company | Centrifugal filling of sample processing devices |
US8097471B2 (en) * | 2000-11-10 | 2012-01-17 | 3M Innovative Properties Company | Sample processing devices |
WO2002044695A1 (en) * | 2000-11-16 | 2002-06-06 | Burstein Technologies, Inc. | Methods and apparatus for detecting and quantifying lymphocytes with optical biodiscs |
US7026131B2 (en) * | 2000-11-17 | 2006-04-11 | Nagaoka & Co., Ltd. | Methods and apparatus for blood typing with optical bio-discs |
US7087203B2 (en) * | 2000-11-17 | 2006-08-08 | Nagaoka & Co., Ltd. | Methods and apparatus for blood typing with optical bio-disc |
WO2002042780A2 (en) * | 2000-11-22 | 2002-05-30 | Burstein Technologies, Inc. | Apparatus and methods for separating agglutinants and disperse particles |
WO2003087827A2 (en) | 2001-04-11 | 2003-10-23 | Burstein Technologies, Inc. | Multi-parameter assays including analysis discs and methods relating thereto |
WO2004058405A1 (en) * | 2001-05-02 | 2004-07-15 | 3M Innovative Properties Company | Sample processing device with resealable process chamber |
US20040226348A1 (en) * | 2001-07-24 | 2004-11-18 | Phillip Bruce | Magnetic assisted detection of magnetic beads using optical disc drives |
US6791677B2 (en) * | 2001-08-28 | 2004-09-14 | Tosoh Corporation | Information measuring apparatus using a fine channel device |
US20030129665A1 (en) * | 2001-08-30 | 2003-07-10 | Selvan Gowri Pyapali | Methods for qualitative and quantitative analysis of cells and related optical bio-disc systems |
WO2003021222A2 (en) * | 2001-08-31 | 2003-03-13 | Burstein Technologies, Inc. | Capture layer assemblies for cellular assays including related optical analysis discs and methods |
WO2003023354A2 (en) * | 2001-09-07 | 2003-03-20 | Burstein Technologies, Inc. | Optical bio-disc systems for nuclear morphology based identification |
AU2002352735A1 (en) * | 2001-11-20 | 2003-06-10 | Burstein Technologies, Inc. | Optical bio-discs and microfluidic devices for analysis of cells |
US6889468B2 (en) * | 2001-12-28 | 2005-05-10 | 3M Innovative Properties Company | Modular systems and methods for using sample processing devices |
CA2471018A1 (en) * | 2002-01-28 | 2003-08-07 | Burstein Technologies, Inc. | Methods and apparatus for logical triggering of an optical bio-disc |
EP1470424A2 (en) | 2002-01-31 | 2004-10-27 | Burstein Technologies, Inc. | Method for triggering through disc grooves and related optical analysis discs and system |
US7459127B2 (en) * | 2002-02-26 | 2008-12-02 | Siemens Healthcare Diagnostics Inc. | Method and apparatus for precise transfer and manipulation of fluids by centrifugal and/or capillary forces |
JP3445791B1 (en) * | 2002-05-30 | 2003-09-08 | 株式会社リージャー | Biochemical analysis method and apparatus, and biochemical analysis cartridge |
US7094354B2 (en) * | 2002-12-19 | 2006-08-22 | Bayer Healthcare Llc | Method and apparatus for separation of particles in a microfluidic device |
US7507376B2 (en) * | 2002-12-19 | 2009-03-24 | 3M Innovative Properties Company | Integrated sample processing devices |
US7125711B2 (en) * | 2002-12-19 | 2006-10-24 | Bayer Healthcare Llc | Method and apparatus for splitting of specimens into multiple channels of a microfluidic device |
US7332129B2 (en) * | 2003-01-09 | 2008-02-19 | 3M Innovative Properties Company | Sample processing device having process chambers with bypass slots |
US7435381B2 (en) * | 2003-05-29 | 2008-10-14 | Siemens Healthcare Diagnostics Inc. | Packaging of microfluidic devices |
US20040265172A1 (en) * | 2003-06-27 | 2004-12-30 | Pugia Michael J. | Method and apparatus for entry and storage of specimens into a microfluidic device |
US20080257754A1 (en) * | 2003-06-27 | 2008-10-23 | Pugia Michael J | Method and apparatus for entry of specimens into a microfluidic device |
US20040265171A1 (en) * | 2003-06-27 | 2004-12-30 | Pugia Michael J. | Method for uniform application of fluid into a reactive reagent area |
CN1826218B (en) * | 2003-07-18 | 2010-09-22 | Dade白令公司 | Automated multi-detector analyzer |
US7347617B2 (en) * | 2003-08-19 | 2008-03-25 | Siemens Healthcare Diagnostics Inc. | Mixing in microfluidic devices |
US20050170515A1 (en) * | 2004-02-04 | 2005-08-04 | Hach Company | Analytical rotor system with an analytical signal path |
US20050169805A1 (en) * | 2004-02-04 | 2005-08-04 | Hach Company | Analytical rotor system with a sample chamber |
US20050169804A1 (en) * | 2004-02-04 | 2005-08-04 | Hach Company | User-configurable analytical rotor system |
US20050170514A1 (en) * | 2004-02-04 | 2005-08-04 | Hach Company | Analytical rotor system for method of standard additions testing |
CA2554562A1 (en) * | 2004-02-04 | 2005-08-25 | Hach Company | User-configurable analytical rotor system |
US20050170513A1 (en) * | 2004-02-04 | 2005-08-04 | Hach Company | Analytical rotor system for titration testing |
US7932090B2 (en) * | 2004-08-05 | 2011-04-26 | 3M Innovative Properties Company | Sample processing device positioning apparatus and methods |
US7323660B2 (en) * | 2005-07-05 | 2008-01-29 | 3M Innovative Properties Company | Modular sample processing apparatus kits and modules |
US7754474B2 (en) | 2005-07-05 | 2010-07-13 | 3M Innovative Properties Company | Sample processing device compression systems and methods |
US7763210B2 (en) * | 2005-07-05 | 2010-07-27 | 3M Innovative Properties Company | Compliant microfluidic sample processing disks |
ES2753136T3 (en) | 2006-12-22 | 2020-04-07 | Diasorin S P A | Thermal transfer methods for microfluidic systems |
KR20090105934A (en) * | 2006-12-22 | 2009-10-07 | 쓰리엠 이노베이티브 프로퍼티즈 컴파니 | Enhanced sample processing devices, systems and methods |
US8343428B2 (en) * | 2007-10-29 | 2013-01-01 | Rohm Co., Ltd. | Microchip and method of using the same |
US8367424B2 (en) * | 2007-10-15 | 2013-02-05 | Rohm Co., Ltd. | Microchip and method of using the same |
US8293100B2 (en) * | 2009-03-13 | 2012-10-23 | Terrasep, Llc | Methods and apparatus for centrifugal liquid chromatography |
USD638951S1 (en) | 2009-11-13 | 2011-05-31 | 3M Innovative Properties Company | Sample processing disk cover |
USD667561S1 (en) | 2009-11-13 | 2012-09-18 | 3M Innovative Properties Company | Sample processing disk cover |
US20110117607A1 (en) * | 2009-11-13 | 2011-05-19 | 3M Innovative Properties Company | Annular compression systems and methods for sample processing devices |
USD638550S1 (en) | 2009-11-13 | 2011-05-24 | 3M Innovative Properties Company | Sample processing disk cover |
US8834792B2 (en) | 2009-11-13 | 2014-09-16 | 3M Innovative Properties Company | Systems for processing sample processing devices |
US8931331B2 (en) | 2011-05-18 | 2015-01-13 | 3M Innovative Properties Company | Systems and methods for volumetric metering on a sample processing device |
USD672467S1 (en) | 2011-05-18 | 2012-12-11 | 3M Innovative Properties Company | Rotatable sample processing disk |
MX337943B (en) | 2011-05-18 | 2016-03-29 | Focus Diagnostics Inc | Systems and methods for detecting the presence of a selected volume of material in a sample processing device. |
CN103501908B (en) | 2011-05-18 | 2016-03-16 | 3M创新有限公司 | The system and method that valve is adjusted on sample processing device |
TWI562829B (en) * | 2015-06-17 | 2016-12-21 | Delta Electronics Inc | Centrifugal channel device and centrifugal channel main body |
DE102018129772A1 (en) * | 2018-11-26 | 2020-05-28 | Schunk Gmbh & Co. Kg Spann- Und Greiftechnik | Electric turntable |
EP4357773A2 (en) * | 2020-01-28 | 2024-04-24 | Daylight Solutions, Inc. | Fluid analyzer with self-check, leak detection, and adjustable gain |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3215849A (en) * | 1962-09-05 | 1965-11-02 | Harry H Golden | Spectrophotometer with movable cuvette unit to isolate a single wavelength |
US3555284A (en) * | 1968-12-18 | 1971-01-12 | Norman G Anderson | Multistation, single channel analytical photometer and method of use |
US3576441A (en) * | 1970-03-17 | 1971-04-27 | Raymond K Adams | Analytical photometer-to-digital computer interfacing system for real time data reduction |
-
1972
- 1972-10-06 US US00295780A patent/US3798459A/en not_active Expired - Lifetime
-
1973
- 1973-09-24 CA CA181,798A patent/CA988321A/en not_active Expired
- 1973-09-25 GB GB4476573A patent/GB1414885A/en not_active Expired
- 1973-09-26 NL NL7313249A patent/NL7313249A/xx not_active Application Discontinuation
- 1973-09-28 BE BE136165A patent/BE805458A/en not_active IP Right Cessation
- 1973-09-29 IN IN2207/CAL/73A patent/IN141136B/en unknown
- 1973-10-02 CH CH1410473A patent/CH572208A5/xx not_active IP Right Cessation
- 1973-10-02 IT IT29637/73A patent/IT995557B/en active
- 1973-10-03 ES ES419308A patent/ES419308A1/en not_active Expired
- 1973-10-03 SE SE7313469A patent/SE385158B/en unknown
- 1973-10-04 IL IL43372A patent/IL43372A/en unknown
- 1973-10-04 DE DE2349927A patent/DE2349927C3/en not_active Expired
- 1973-10-05 FR FR7335745A patent/FR2202594A5/fr not_active Expired
- 1973-10-05 BR BR7751/73A patent/BR7307751D0/en unknown
- 1973-10-05 JP JP48111570A patent/JPS4974094A/ja active Pending
- 1973-10-08 AT AT854873A patent/AT334115B/en not_active IP Right Cessation
-
1978
- 1978-01-25 JP JP1978007801U patent/JPS5445597U/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
BR7307751D0 (en) | 1975-09-02 |
AU6105673A (en) | 1975-04-10 |
IL43372A0 (en) | 1974-01-14 |
CH572208A5 (en) | 1976-01-30 |
DE2349927C3 (en) | 1980-07-10 |
ATA854873A (en) | 1976-04-15 |
DE2349927B2 (en) | 1979-09-27 |
FR2202594A5 (en) | 1974-05-03 |
CA988321A (en) | 1976-05-04 |
JPS4974094A (en) | 1974-07-17 |
IT995557B (en) | 1975-11-20 |
ES419308A1 (en) | 1977-07-01 |
DE2349927A1 (en) | 1974-04-11 |
SE385158B (en) | 1976-06-08 |
AT334115B (en) | 1976-12-27 |
JPS5445597U (en) | 1979-03-29 |
US3798459A (en) | 1974-03-19 |
IN141136B (en) | 1977-01-22 |
NL7313249A (en) | 1974-04-09 |
BE805458A (en) | 1974-01-16 |
GB1414885A (en) | 1975-11-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
IL43372A (en) | Compact dynamic multistation photometer utilizing disposable cuvette rotor | |
US4226531A (en) | Disposable multi-cuvette rotor | |
US3744974A (en) | Loading disk for photometric analyzer of rotary cuvette type | |
ES378828A1 (en) | Multistation analytical photometer and method of use | |
US4509856A (en) | Rotor for centrifugal fast analyzers | |
ES409317A1 (en) | Rotor for multistation photometric analyzer | |
US3759666A (en) | Analytical process | |
US3864089A (en) | Multiple-sample rotor assembly for blood fraction preparation | |
US3795451A (en) | Rotor for fast analyzer of rotary cuvette type | |
CA1215249A (en) | Centrifugal analyzer | |
IL45316A (en) | Simplified rotor for fast analyzer of rotary cuvette type | |
EP0141009A3 (en) | Removable analysis segment for the rotor unit of a centrifugal analyser | |
ES420501A1 (en) | Rotor for fluorometric measurements in fast analyzer of rotary | |
GB1405694A (en) | Dynamic multistation photometric analyzer for serological testing | |
US4213332A (en) | Rotor-stator configuration for water brake dynamometer | |
ES417311A1 (en) | Dynamic multistation photometer-fluorometer | |
IL43750A (en) | Portable dynamic multistation photometer-fluorometer | |
SE7608743L (en) | APPARATUS FOR USE IN EXAMINATION OF SAMPLES | |
US3582218A (en) | Multistation photometric analyzer | |
GB1340497A (en) | Centrifugal analyser | |
US3667850A (en) | Flare radiometer | |
CA1069721A (en) | Method and apparatus for producing a suspension of biological cells on a substrate | |
GB1324517A (en) | Spectrophotometric investigation of substances | |
JPS57106843A (en) | Multiple wavelength multi-absorptiometric analyzing apparatus | |
US3669551A (en) | Analog data reduction circuit for a rotating spectrophotometer wherein the light passing through a selected chamber is compared with all others |