FR2370276A1 - Procede et appareil de mesure de la densite de particules - Google Patents

Procede et appareil de mesure de la densite de particules

Info

Publication number
FR2370276A1
FR2370276A1 FR7733066A FR7733066A FR2370276A1 FR 2370276 A1 FR2370276 A1 FR 2370276A1 FR 7733066 A FR7733066 A FR 7733066A FR 7733066 A FR7733066 A FR 7733066A FR 2370276 A1 FR2370276 A1 FR 2370276A1
Authority
FR
France
Prior art keywords
pulses
particles
counter
relates
density
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
FR7733066A
Other languages
English (en)
Other versions
FR2370276B1 (fr
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.)
Becton Dickinson and Co
Original Assignee
Becton Dickinson and 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
Priority claimed from US05/832,893 external-priority patent/US4110604A/en
Application filed by Becton Dickinson and Co filed Critical Becton Dickinson and Co
Publication of FR2370276A1 publication Critical patent/FR2370276A1/fr
Application granted granted Critical
Publication of FR2370276B1 publication Critical patent/FR2370276B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G01N15/132—
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/38—Diluting, dispersing or mixing samples
    • G01N2015/012—
    • G01N2015/018—
    • G01N2015/1019—
    • G01N2015/1024—
    • G01N2015/1029—

Abstract

L'invention concerne les appareils de comptage de particules en suspension dans un fluide. Elle se rapporte à un appareil dans lequel un transducteur 10 détecte des particules de deux types différant par une caractéristique physique. Des circuits detecteurs de seuil 16 et 18 et un detecteur de crêtes 20 permettent à un circuit 22 de classement de séparer les impulsions en impulsions de deux types transmises par deux lignes 33 et 35, ces cimpulsions étant comptées séparément. Selon l'invention, le compteur 24 des impulsions d'un premier type est arrêté lorsque le compteur 28 des impulsions d'un second type atteint une valeur prédéterminée et préréglée dans des commutateurs 30. Application au comptage automatique des plaquettes d'échantillons sanguins.
FR7733066A 1976-11-04 1977-11-03 Procede et appareil de mesure de la densite de particules Granted FR2370276A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US73889676A 1976-11-04 1976-11-04
US05/832,893 US4110604A (en) 1976-11-04 1977-09-13 Particle density measuring system

Publications (2)

Publication Number Publication Date
FR2370276A1 true FR2370276A1 (fr) 1978-06-02
FR2370276B1 FR2370276B1 (fr) 1981-12-04

Family

ID=27113441

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7733066A Granted FR2370276A1 (fr) 1976-11-04 1977-11-03 Procede et appareil de mesure de la densite de particules

Country Status (7)

Country Link
JP (1) JPS5377584A (fr)
AU (1) AU504450B2 (fr)
CA (1) CA1091350A (fr)
DE (1) DE2748923C2 (fr)
FR (1) FR2370276A1 (fr)
GB (1) GB1588170A (fr)
IT (1) IT1087196B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2506974A1 (fr) * 1981-05-26 1982-12-03 Technicon Instr Appareil et procede de correction d'erreurs dues a des coincidences
EP0529666A2 (fr) * 1991-08-30 1993-03-03 Omron Corporation Appareil pour l'analyse des cellules
US5488469A (en) * 1991-08-30 1996-01-30 Omron Corporation Cell analyzing apparatus

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3227664A1 (de) * 1982-07-23 1984-02-02 Vladimir Vasil'evič Saratov Pavlov Einrichtung zur messung der menge und groesse fester teilchen in fluessigen und gasmedien
GB8410500D0 (en) * 1984-04-25 1984-05-31 Orbec Ltd Monitoring particles in liquids
JPH0736269Y2 (ja) * 1985-07-26 1995-08-16 日本光電工業株式会社 液体中の粒子計測装置
US8023592B2 (en) * 2005-08-24 2011-09-20 Beckman Coulter, Inc. Method and apparatus for finding center amplitude of particle size-representative pulses produced by aperture based sizing system
DE102006021487B3 (de) 2006-05-05 2007-09-06 Parsum Gmbh Verfahren und Vorrichtung zur Bestimmung der in einem Partikelstrom enthaltenen Partikel
CN112557281B (zh) * 2020-11-23 2022-06-24 深圳市科曼医疗设备有限公司 血液细胞分析仪的plt粒子检测方法和装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1118510B (de) * 1958-11-25 1961-11-30 Boskamp Geraete Bau K G Elektrisches Registriergeraet zur quantitativen Auswertung des Differential-Blutbildes
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

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1118510B (de) * 1958-11-25 1961-11-30 Boskamp Geraete Bau K G Elektrisches Registriergeraet zur quantitativen Auswertung des Differential-Blutbildes
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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2506974A1 (fr) * 1981-05-26 1982-12-03 Technicon Instr Appareil et procede de correction d'erreurs dues a des coincidences
EP0529666A2 (fr) * 1991-08-30 1993-03-03 Omron Corporation Appareil pour l'analyse des cellules
EP0529666A3 (en) * 1991-08-30 1994-07-06 Omron Tateisi Electronics Co Cell analyzing apparatus
US5488469A (en) * 1991-08-30 1996-01-30 Omron Corporation Cell analyzing apparatus

Also Published As

Publication number Publication date
JPS627966B2 (fr) 1987-02-20
AU3007877A (en) 1979-06-07
DE2748923C2 (de) 1982-05-13
JPS5377584A (en) 1978-07-10
AU504450B2 (en) 1979-10-11
IT1087196B (it) 1985-05-31
DE2748923A1 (de) 1978-05-11
FR2370276B1 (fr) 1981-12-04
GB1588170A (en) 1981-04-15
CA1091350A (fr) 1980-12-09

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