IT1093605B - Apparecchiatura per contare particelle in una sospensione liquida - Google Patents

Apparecchiatura per contare particelle in una sospensione liquida

Info

Publication number
IT1093605B
IT1093605B IT21533/78A IT2153378A IT1093605B IT 1093605 B IT1093605 B IT 1093605B IT 21533/78 A IT21533/78 A IT 21533/78A IT 2153378 A IT2153378 A IT 2153378A IT 1093605 B IT1093605 B IT 1093605B
Authority
IT
Italy
Prior art keywords
equipment
liquid suspension
counting particles
counting
particles
Prior art date
Application number
IT21533/78A
Other languages
English (en)
Other versions
IT7821533A0 (it
Original Assignee
Becton Dickinson Co
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 Becton Dickinson Co filed Critical Becton Dickinson Co
Publication of IT7821533A0 publication Critical patent/IT7821533A0/it
Application granted granted Critical
Publication of IT1093605B publication Critical patent/IT1093605B/it

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/10—Investigating individual particles
    • G01N15/1031—Investigating individual particles by measuring electrical or magnetic effects
    • G01N15/12—Investigating individual particles by measuring electrical or magnetic effects by observing changes in resistance or impedance across apertures when traversed by individual particles, e.g. by using the Coulter principle
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/10—Investigating individual particles
    • G01N15/1031—Investigating individual particles by measuring electrical or magnetic effects
    • G01N15/12—Investigating individual particles by measuring electrical or magnetic effects by observing changes in resistance or impedance across apertures when traversed by individual particles, e.g. by using the Coulter principle
    • G01N15/131—Details
    • G01N15/132—Circuits

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Threshing Machine Elements (AREA)
  • Cereal-Derived Products (AREA)
IT21533/78A 1977-03-23 1978-03-23 Apparecchiatura per contare particelle in una sospensione liquida IT1093605B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/780,402 US4165484A (en) 1977-03-23 1977-03-23 Particle counting apparatus utilizing various fluid resistors to maintain proper pressure differentials

Publications (2)

Publication Number Publication Date
IT7821533A0 IT7821533A0 (it) 1978-03-23
IT1093605B true IT1093605B (it) 1985-07-19

Family

ID=25119495

Family Applications (1)

Application Number Title Priority Date Filing Date
IT21533/78A IT1093605B (it) 1977-03-23 1978-03-23 Apparecchiatura per contare particelle in una sospensione liquida

Country Status (6)

Country Link
US (1) US4165484A (it)
JP (2) JPS53119086A (it)
DE (2) DE2812517A1 (it)
FR (2) FR2399655A1 (it)
GB (2) GB1597081A (it)
IT (1) IT1093605B (it)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2750447C2 (de) * 1977-11-11 1986-04-17 Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V., 3400 Göttingen Vorrichtung zur Messung bestimmter Eigenschaften in einer Partikelsuspension suspendierter Partikel
US4434398A (en) 1978-05-18 1984-02-28 Particle Data, Inc. Porous passage means and method for particle analyzing systems
US4290011A (en) * 1978-05-18 1981-09-15 Particle Data, Inc. Particle length and volume comeasurement with controlled orientation
US4240029A (en) * 1979-04-20 1980-12-16 Becton Dickinson & Company Apparatus for counting particles in a liquid suspension
US4298836A (en) * 1979-11-23 1981-11-03 Coulter Electronics, Inc. Particle shape determination
US4395676A (en) * 1980-11-24 1983-07-26 Coulter Electronics, Inc. Focused aperture module
EP0100891A1 (de) * 1982-08-17 1984-02-22 Contraves Ag Verfahren und Vorrichtung zur Korrektur von Koinzidenzfehlern beim Zählen von Teilchen zweier Sorten
US4461181A (en) * 1983-01-06 1984-07-24 Becton Dickinson And Company Control for sample volume metering apparatus
US4503385A (en) * 1983-07-11 1985-03-05 Becton, Dickinson And Company Apparatus and method for regulating sheath fluid flow in a hydrodynamically focused fluid flow system
US4710021A (en) * 1983-10-14 1987-12-01 Sequoia-Turner Corporation Particulate matter analyzing apparatus and method
GB8410500D0 (en) * 1984-04-25 1984-05-31 Orbec Ltd Monitoring particles in liquids
US4660971A (en) * 1984-05-03 1987-04-28 Becton, Dickinson And Company Optical features of flow cytometry apparatus
US4977517A (en) * 1988-09-21 1990-12-11 Toni Diagnostics, Inc. Leak and clog detection and removal system for use with particle counters
JP2573091B2 (ja) * 1990-09-23 1997-01-16 株式会社堀場製作所 液体測定装置
US6812032B1 (en) 1993-01-21 2004-11-02 Cdc Technologies, Inc. Apparatus and method for making a plurality of reagent mixtures and analyzing particle distributions of the reagent mixtures
US5380491A (en) * 1993-01-21 1995-01-10 Cdc Technologies, Inc. Apparatus for pumping and directing fluids for hematology testing
US5728351A (en) * 1993-01-21 1998-03-17 Cdc Technologies, Inc. Apparatus for making a plurality of reagent mixtures and analyzing particle distributions of the reagent mixtures
GB9405028D0 (en) * 1994-03-15 1994-04-27 Counting Tech Ltd Fluid diluter
US5503036A (en) * 1994-05-09 1996-04-02 Ciba Corning Diagnostics Corp. Obstruction detection circuit for sample probe
US5840254A (en) 1995-06-02 1998-11-24 Cdc Technologies, Inc. Apparatus for mixing fluids for analysis
US5895869A (en) * 1995-11-17 1999-04-20 Mwi, Inc. Method and apparatus for analyzing particulate matter
US5723795A (en) * 1995-12-14 1998-03-03 Abbott Laboratories Fluid handler and method of handling a fluid
US5915282A (en) * 1995-12-14 1999-06-22 Abbott Laboratories Fluid handler and method of handling a fluid
US5965828A (en) * 1995-12-14 1999-10-12 Abbott Laboratories Fluid handler and method of handling a fluid
US5861563A (en) * 1997-03-20 1999-01-19 Bayer Corporation Automatic closed tube sampler
US6175227B1 (en) 1997-07-03 2001-01-16 Coulter International Corp. Potential-sensing method and apparatus for sensing and characterizing particles by the Coulter principle
US6111398A (en) * 1997-07-03 2000-08-29 Coulter International Corp. Method and apparatus for sensing and characterizing particles
DE19735066C1 (de) * 1997-08-13 1999-01-28 Hydac Filtertechnik Gmbh Auswerteverfahren für einen Partikelzähler und Vorrichtung zum Durchführen des Verfahrens
US5819948A (en) * 1997-08-21 1998-10-13 Van Den Engh; Gerrit J. Particle separating apparatus and method
US6331437B1 (en) 1998-07-14 2001-12-18 Bayer Corporation Automatic handler for feeding containers into and out of an analytical instrument
US6473171B1 (en) 1999-01-15 2002-10-29 Coors Brewing Company Biocompatible apparatus for ultrasensitive and rapid detection of contaminants in liquids
US7656146B2 (en) * 2006-11-02 2010-02-02 Shenzhen Mindray Bio-Medical Electronics Co., Ltd. Particle analyzer based on sheath flow impedance method
US7940105B2 (en) * 2008-08-08 2011-05-10 Beckman Coulter, Inc. High-resolution parametric signal restoration
CN103091232B (zh) * 2011-10-31 2015-09-30 深圳迈瑞生物医疗电子股份有限公司 粒子分析仪及其粒子测试控制方法、装置
EP3948224A1 (en) * 2020-05-19 2022-02-09 Life Technologies Corporation Nozzle sealing and unclog station for a flow cytometer

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3678382A (en) * 1970-04-09 1972-07-18 Coulter Electronics Malfunction detection circuit and method
US3810011A (en) * 1970-05-25 1974-05-07 Coulter Electronics Apparatus and method for analyzing the particle volume distribution for a plurality of particles of different size in a quantity of liquid
GB1322686A (en) * 1971-03-10 1973-07-11 Licentia Gmbh Apparatus for analysing particles suspended in a liquid
DE2134937C2 (de) * 1971-07-13 1982-08-05 Bio-Physics Systems, Inc., Baldwin Place, N.Y. Verfahren und Vorrichtung zum Erfassen von in einer Flüssigkeit suspendierten Teilchen
US3920961A (en) * 1971-07-28 1975-11-18 Robert H Berg Digital timer
DE2205481A1 (de) * 1972-02-05 1973-08-09 Telefunken Patent Vorrichtung zum klassieren von in einer untersuchungsfluessigkeit suspendierten partikeln
US3828260A (en) * 1973-04-02 1974-08-06 Royco Instr Inc Hematocrit measuring apparatus
US4070617A (en) * 1974-05-08 1978-01-24 Max-Planck-Gesellschaft Zur Forderung Der Wissenschaften E.V. Device for controlling the particle flow in an apparatus for measuring the properties of particles suspended in liquid
US4014611A (en) * 1975-04-30 1977-03-29 Coulter Electronics, Inc. Aperture module for use in particle testing apparatus

Also Published As

Publication number Publication date
DE2812517A1 (de) 1978-09-28
GB1597081A (en) 1981-09-03
GB1597082A (en) 1981-09-03
JPS53119086A (en) 1978-10-18
FR2399656B1 (it) 1983-05-20
US4165484A (en) 1979-08-21
JPS58160844A (ja) 1983-09-24
FR2399656A1 (fr) 1979-03-02
FR2399655B1 (it) 1983-05-20
FR2399655A1 (fr) 1979-03-02
DE2856997C2 (de) 1982-07-22
IT7821533A0 (it) 1978-03-23

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19960327