FR2403603A1 - Procede et appareil pour effectuer des comptages precis de cellules du sang - Google Patents

Procede et appareil pour effectuer des comptages precis de cellules du sang

Info

Publication number
FR2403603A1
FR2403603A1 FR7809705A FR7809705A FR2403603A1 FR 2403603 A1 FR2403603 A1 FR 2403603A1 FR 7809705 A FR7809705 A FR 7809705A FR 7809705 A FR7809705 A FR 7809705A FR 2403603 A1 FR2403603 A1 FR 2403603A1
Authority
FR
France
Prior art keywords
rejected
blood corpuscles
calculated
extreme values
electronic counter
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.)
Withdrawn
Application number
FR7809705A
Other languages
English (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.)
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
Application filed by Becton Dickinson and Co filed Critical Becton Dickinson and Co
Publication of FR2403603A1 publication Critical patent/FR2403603A1/fr
Withdrawn legal-status Critical Current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
    • G01N15/131—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)

Abstract

Procédé et appareil pour effectuer des comptages précis de globules sanguins à partir de signaux reçus d'un compteur de globules. On obtient du compteur de globules des signaux représentatifs des comptes de globules Xi pour une multiplicité de segments de temps t i sur une période de comptage totale t, on détermine si la distribution des comptes Xi est statistiquement cohérente à l'intérieur de limites acceptables, et on calcule une valeur d'essai kX, qui est une valeur moyenne acceptable X des comptes Xi multipliée par une constante k, seulement si la distribution des comptes Xi se trouve à l'intérieur des limites acceptables.
FR7809705A 1977-09-15 1978-03-31 Procede et appareil pour effectuer des comptages precis de cellules du sang Withdrawn FR2403603A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US83355877A 1977-09-15 1977-09-15
US83355777A 1977-09-15 1977-09-15

Publications (1)

Publication Number Publication Date
FR2403603A1 true FR2403603A1 (fr) 1979-04-13

Family

ID=27125634

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7809705A Withdrawn FR2403603A1 (fr) 1977-09-15 1978-03-31 Procede et appareil pour effectuer des comptages precis de cellules du sang

Country Status (2)

Country Link
DE (1) DE2812470A1 (fr)
FR (1) FR2403603A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0254380A3 (en) * 1986-07-25 1989-11-29 Toa Medical Electronics Co., Ltd. Particle size distribution analysis

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61160038A (ja) * 1985-01-08 1986-07-19 Sumitomo Electric Ind Ltd 粒子検出器
US5978435A (en) * 1995-08-21 1999-11-02 Foss Electric A/S Method and an apparatus for determining the number of particles or cells in a liquid sample

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3868498A (en) * 1972-03-29 1975-02-25 Contraves Ag Method and apparatus for determining errors during counting of particles

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3868498A (en) * 1972-03-29 1975-02-25 Contraves Ag Method and apparatus for determining errors during counting of particles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0254380A3 (en) * 1986-07-25 1989-11-29 Toa Medical Electronics Co., Ltd. Particle size distribution analysis

Also Published As

Publication number Publication date
DE2812470A1 (de) 1979-03-22

Similar Documents

Publication Publication Date Title
ES459636A1 (es) Sistema de bomba para muestreo de aires.
DE3719087C2 (de) Alarmabschalteinrichtung für eine Wecker- oder Terminuhr
US4447883A (en) Coincidence-error correcting apparatus and method
GB1400361A (en) Determining staple fibre lenghts
US3949198A (en) Methods and apparatuses for correcting coincidence count inaccuracies in a coulter type of particle analyzer
DE3603673A1 (de) Verfahren zur elimination von stoerungen eines messsignals
EP0048638A3 (fr) Limiteur de fréquence maximale
GB1141252A (en) Protective goggles
JPS5713380A (en) Discriminating circuit for radiation detecting signal
Mazumdar et al. A study of the variability due to coincident passage in an electronic blood cell counter
GB1423021A (en) Methods and apparatuses for correcting coincidence count inaccuracies in a particle analyzer
JPS56160676A (en) Counting method of radiation
GB1248169A (en) Particle analysis pulse collating apparatus
JPS6480819A (en) Flow rate detecting device
SU399822A1 (ru) УСТРОЙСТВО ДЛЯ ИЗМЕРЕНИЯ п ВРЕМЕННЫХ ИНТЕРВАЛОВ
JPS5325452A (en) Ultrasonic outside diameter measuring device
JPS5840946U (ja) ランダムパルスカウンタ
JPS5744209A (en) Signal separating circuit
FR2317648A1 (fr) Analyseur de particules comprenant un circuit de correction d'erreurs de coincidence
JPS6453188A (en) Counting rate meter for warning
ATE60843T1 (de) Steuergeraet.
JPS5598333A (en) Particle counting device
Bachiocco et al. ! b-endorphin and" overt" pain measures in children.
JPS57152233A (en) Integrating counter circuit
Benes et al. Testing Congruence of Force and Diameter Changes in Repeating Upsetting Test

Legal Events

Date Code Title Description
ST Notification of lapse