CA1013433A - Method and apparatus for studying particles having widely different sizes - Google Patents

Method and apparatus for studying particles having widely different sizes

Info

Publication number
CA1013433A
CA1013433A CA219,430A CA219430A CA1013433A CA 1013433 A CA1013433 A CA 1013433A CA 219430 A CA219430 A CA 219430A CA 1013433 A CA1013433 A CA 1013433A
Authority
CA
Canada
Prior art keywords
different sizes
widely different
studying particles
studying
particles
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
Application number
CA219,430A
Other languages
English (en)
Other versions
CA219430S (en
Inventor
Walter R. Hogg
Wallace H. Coulter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of CA1013433A publication Critical patent/CA1013433A/en
Expired legal-status Critical Current

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
    • G01N15/134—Devices using two or more apertures

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)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Automatic Analysis And Handling Materials Therefor (AREA)
CA219,430A 1974-02-06 1975-02-05 Method and apparatus for studying particles having widely different sizes Expired CA1013433A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US439875A US3882385A (en) 1974-02-06 1974-02-06 Method and apparatus for studying particles having widely different sizes

Publications (1)

Publication Number Publication Date
CA1013433A true CA1013433A (en) 1977-07-05

Family

ID=23746498

Family Applications (1)

Application Number Title Priority Date Filing Date
CA219,430A Expired CA1013433A (en) 1974-02-06 1975-02-05 Method and apparatus for studying particles having widely different sizes

Country Status (7)

Country Link
US (1) US3882385A (de)
JP (1) JPS50110388A (de)
CA (1) CA1013433A (de)
DE (1) DE2504755A1 (de)
FR (1) FR2260099B1 (de)
GB (1) GB1452458A (de)
SE (1) SE7501255L (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU173092B (hu) * 1976-02-24 1979-02-28 Medicor Muevek Ehlektroskhema dlja opredelenija chisla eritrocito, srednego ob"joma tel'ca, velichini gematokrita i drugikh parametrov krovi
US4078211A (en) * 1976-09-29 1978-03-07 Coulter Electronics, Inc. Method and apparatus for balancing particle detecting signals generated in a particle study device having multiple apertures
US4157499A (en) * 1977-09-15 1979-06-05 Becton, Dickinson And Company Blood cell counter having dual testing heads
US4307339A (en) * 1979-12-10 1981-12-22 Ferrell Michael W Particle counter
US4450435A (en) * 1981-11-30 1984-05-22 Bobby Dencil James Analog debris alarm
GB8606299D0 (en) * 1986-03-14 1986-04-23 Holley J E F Scanner
EP0580525A1 (de) * 1992-07-13 1994-01-26 Eastman Kodak Company Partikelgrössesonde für Silberhalogenemulsion
US5955295A (en) * 1992-10-30 1999-09-21 Micro-Med, Inc. Micro lysis-analysis process to measure cell characteristics and diagnose diseases
US5532139A (en) * 1992-10-30 1996-07-02 Micro-Med, Inc. Micro lysis-analysis process to measure cell characteristics and diagnose diseases
US5610027A (en) * 1992-10-30 1997-03-11 Micro-Med, Inc. Microphoto lysis-anlaysis process to measure cell characteristics
US5578771A (en) * 1993-02-12 1996-11-26 Outokumpu Mintec Oy Method for measuring particle size distribution
US6970799B2 (en) * 2002-10-02 2005-11-29 Airadvice, Inc. Method and apparatus for particle sizing
US8146407B2 (en) * 2008-06-20 2012-04-03 Beckman Coulter, Inc. Particle counter with electronic detection of aperture blockage

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3444464A (en) * 1965-11-26 1969-05-13 Coulter Electronics Multiple aperture fittings for particle analyzing apparatus

Also Published As

Publication number Publication date
FR2260099B1 (de) 1977-11-18
US3882385A (en) 1975-05-06
DE2504755A1 (de) 1975-08-07
JPS50110388A (de) 1975-08-30
GB1452458A (en) 1976-10-13
SE7501255L (de) 1975-08-07
FR2260099A1 (de) 1975-08-29

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