FR2313672A1 - Non-diluting particle study device having ejector - includes hollow body containing thermal expansion device which ejects fluid - Google Patents

Non-diluting particle study device having ejector - includes hollow body containing thermal expansion device which ejects fluid

Info

Publication number
FR2313672A1
FR2313672A1 FR7617088A FR7617088A FR2313672A1 FR 2313672 A1 FR2313672 A1 FR 2313672A1 FR 7617088 A FR7617088 A FR 7617088A FR 7617088 A FR7617088 A FR 7617088A FR 2313672 A1 FR2313672 A1 FR 2313672A1
Authority
FR
France
Prior art keywords
thermal expansion
expansion device
hollow body
ejector
body containing
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
FR7617088A
Other languages
French (fr)
Other versions
FR2313672B1 (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.)
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
Priority claimed from US05/584,142 external-priority patent/US3973196A/en
Application filed by Individual filed Critical Individual
Publication of FR2313672A1 publication Critical patent/FR2313672A1/en
Application granted granted Critical
Publication of FR2313672B1 publication Critical patent/FR2313672B1/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
    • G01N15/131—Details

Landscapes

  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Automatic Analysis And Handling Materials Therefor (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

In the particle study device a non-diluted specific minute amount of fluid sample containing particles is ejected by an ejecting mechanism into a flow stream leading to a sensing zone. the ejecting mechanism includes a hollow-body having a thermal expansion device mounted in it. The temperature of the thermal expansion device is monitored and stored. The device operation is then initiated and power is supplied to the thermal expansion device to raise its temperature and cause it to expand so as to eject a fluid sample from the hollow body. The temperature rise of the thermal expansion device is monitored and when a predetermined temperature rise has occurred, indicating ejection of a specific amount of fluid sample, the power supplied is terminated.
FR7617088A 1975-06-05 1976-06-04 Non-diluting particle study device having ejector - includes hollow body containing thermal expansion device which ejects fluid Granted FR2313672A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/584,142 US3973196A (en) 1974-05-24 1975-06-05 Method and apparatus for ejecting a metered amount of particulate sample

Publications (2)

Publication Number Publication Date
FR2313672A1 true FR2313672A1 (en) 1976-12-31
FR2313672B1 FR2313672B1 (en) 1980-09-26

Family

ID=24336088

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7617088A Granted FR2313672A1 (en) 1975-06-05 1976-06-04 Non-diluting particle study device having ejector - includes hollow body containing thermal expansion device which ejects fluid

Country Status (3)

Country Link
JP (1) JPS51151183A (en)
DE (1) DE2625286A1 (en)
FR (1) FR2313672A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3890569A (en) * 1972-08-10 1975-06-17 Coulter Electronics Particle study device
US3939409A (en) * 1974-08-01 1976-02-17 Coulter Electronics, Inc. Particle study device and sample metering means used therein

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3890569A (en) * 1972-08-10 1975-06-17 Coulter Electronics Particle study device
US3939409A (en) * 1974-08-01 1976-02-17 Coulter Electronics, Inc. Particle study device and sample metering means used therein

Also Published As

Publication number Publication date
FR2313672B1 (en) 1980-09-26
JPS51151183A (en) 1976-12-25
DE2625286A1 (en) 1976-12-16

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Legal Events

Date Code Title Description
ST Notification of lapse