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FR2380549A1 - OPENING MODULE WITH PERFORATED ELECTRODE FOR ELECTRONIC PARTICLE DETECTION - Google Patents

OPENING MODULE WITH PERFORATED ELECTRODE FOR ELECTRONIC PARTICLE DETECTION

Info

Publication number
FR2380549A1
FR2380549A1 FR7804136A FR7804136A FR2380549A1 FR 2380549 A1 FR2380549 A1 FR 2380549A1 FR 7804136 A FR7804136 A FR 7804136A FR 7804136 A FR7804136 A FR 7804136A FR 2380549 A1 FR2380549 A1 FR 2380549A1
Authority
FR
France
Prior art keywords
particle detection
opening
opening module
perforated electrode
chamber
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
Application number
FR7804136A
Other languages
French (fr)
Other versions
FR2380549B1 (en
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.)
Coulter Electronics Inc
Original Assignee
Coulter Electronics Inc
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
Priority claimed from US05/768,864 external-priority patent/US4090128A/en
Application filed by Coulter Electronics Inc filed Critical Coulter Electronics Inc
Publication of FR2380549A1 publication Critical patent/FR2380549A1/en
Application granted granted Critical
Publication of FR2380549B1 publication Critical patent/FR2380549B1/fr
Granted 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
    • G01N15/13—Details pertaining to apertures
    • 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

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)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

L'invention concerne un module à ouverture à utiliser dans un dispositif d'examen de particules contenant une suspension d'un liquide particulaire à examiner. Selon l'invention, une première chambre 28 a une paroi définissant une partie de dimension réduite 79, l'ouverture 56 du module 54 etant en communication avec la partie 79 du côté de l'ouverture qui est opposé à celui en communication avec une suspension liquide à à examiner, et un objectif 40 est placé dans une seconde chambre 30 près de la paroi définissant la partie de dimension réduite 79 de la première chambre 28 pour examiner à l'oeil l'ouverture 56 pendant que la suspension la traverse. L'invention s'applique notamment à l'analyse du sang.Disclosed is an aperture module for use in a particle examination device containing a suspension of a particulate liquid to be examined. According to the invention, a first chamber 28 has a wall defining a portion of reduced dimension 79, the opening 56 of the module 54 being in communication with the portion 79 on the side of the opening which is opposite to that in communication with a suspension. liquid to be examined, and an objective 40 is placed in a second chamber 30 near the wall defining the reduced dimension portion 79 of the first chamber 28 to visually examine the opening 56 as the suspension passes through it. The invention applies in particular to the analysis of blood.

FR7804136A 1977-02-15 1978-02-14 OPENING MODULE WITH PERFORATED ELECTRODE FOR ELECTRONIC PARTICLE DETECTION Granted FR2380549A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/768,864 US4090128A (en) 1977-02-15 1977-02-15 Aperture module for use in particle testing apparatus
US86837478A 1978-01-10 1978-01-10

Publications (2)

Publication Number Publication Date
FR2380549A1 true FR2380549A1 (en) 1978-09-08
FR2380549B1 FR2380549B1 (en) 1983-07-08

Family

ID=27118096

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7804136A Granted FR2380549A1 (en) 1977-02-15 1978-02-14 OPENING MODULE WITH PERFORATED ELECTRODE FOR ELECTRONIC PARTICLE DETECTION

Country Status (11)

Country Link
JP (1) JPS53121695A (en)
AU (1) AU508072B2 (en)
CH (1) CH623931A5 (en)
DE (1) DE2806383A1 (en)
ES (1) ES466979A1 (en)
FR (1) FR2380549A1 (en)
GB (1) GB1597904A (en)
IL (1) IL53921A (en)
IT (1) IT1101790B (en)
NL (1) NL7801072A (en)
SE (1) SE7801123L (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2337599B (en) * 1996-11-20 2000-08-16 Microbial Systems Ltd Particle sizing apparatus
GB9624096D0 (en) 1996-11-20 1997-01-08 Microbial Systems Ltd Apparatus and method of use thereof
US6418802B1 (en) * 1996-11-21 2002-07-16 Michael Anthony Wood Particle sizing apparatus and method of use thereof
SE0101597D0 (en) * 2001-05-09 2001-05-09 Astrazeneca Ab Apparatus and method of testing pressurized containers by non-invasive means

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1571423A (en) * 1963-12-12 1969-06-20
US3746976A (en) * 1971-04-07 1973-07-17 Coulter Electronics Self-cleaning aperture tube for coulter study apparatus
FR2244989A1 (en) * 1973-09-26 1975-04-18 Coulter W
FR2309856A1 (en) * 1975-04-30 1976-11-26 Coulter Electronics OPENING MODULE FOR A PARTICLE ANALYSIS APPARATUS

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1571423A (en) * 1963-12-12 1969-06-20
US3746976A (en) * 1971-04-07 1973-07-17 Coulter Electronics Self-cleaning aperture tube for coulter study apparatus
FR2244989A1 (en) * 1973-09-26 1975-04-18 Coulter W
FR2309856A1 (en) * 1975-04-30 1976-11-26 Coulter Electronics OPENING MODULE FOR A PARTICLE ANALYSIS APPARATUS

Also Published As

Publication number Publication date
AU508072B2 (en) 1980-03-06
FR2380549B1 (en) 1983-07-08
IT1101790B (en) 1985-10-07
IT7848010A0 (en) 1978-02-10
AU3286078A (en) 1979-08-09
ES466979A1 (en) 1979-08-16
CH623931A5 (en) 1981-06-30
NL7801072A (en) 1978-08-17
DE2806383A1 (en) 1978-08-17
IL53921A0 (en) 1978-04-30
SE7801123L (en) 1978-08-16
GB1597904A (en) 1981-09-16
JPS53121695A (en) 1978-10-24
IL53921A (en) 1979-12-30

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Legal Events

Date Code Title Description
CL Concession to grant licences
ST Notification of lapse