GB1323271A - Electronic particle analyzing apparatus with aperture tube - Google Patents

Electronic particle analyzing apparatus with aperture tube

Info

Publication number
GB1323271A
GB1323271A GB1297372A GB1297372A GB1323271A GB 1323271 A GB1323271 A GB 1323271A GB 1297372 A GB1297372 A GB 1297372A GB 1297372 A GB1297372 A GB 1297372A GB 1323271 A GB1323271 A GB 1323271A
Authority
GB
United Kingdom
Prior art keywords
tube
aperture
analyzing apparatus
march
aperture tube
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
GB1297372A
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 Ltd
Coulter Electronics Inc
Original Assignee
Coulter Electronics Ltd
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
Application filed by Coulter Electronics Ltd, Coulter Electronics Inc filed Critical Coulter Electronics Ltd
Publication of GB1323271A publication Critical patent/GB1323271A/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
    • G01N15/13—Details pertaining to 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)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

1323271 Particle analysis COULTER ELECTRONICS Ltd 20 March 1972 [26 March 1971] 12973/72 Heading G1N An aperture tube for a Coulter particle analyzer using H.F. of 500 KHz # 10's MHz has the electrodes formed as conducting coatings of e.g. platinum deposited on the inside and outside of the tube and extending down close to the aperture. This reduces the flow of H. F. currents in the electrolyte and the resultant heating and "noise". This modification may also be applied to a double walled tube Figs.6, 7 (not shown) as described in Specification 1259507 or to a "fabricated" tube Figs. 2..5 (not shown) where a plastics tube (54) has exterior and interior metal cylinders (58), (62). Several prior Specifications are referred to.
GB1297372A 1971-03-26 1972-03-20 Electronic particle analyzing apparatus with aperture tube Expired GB1323271A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12833271A 1971-03-26 1971-03-26

Publications (1)

Publication Number Publication Date
GB1323271A true GB1323271A (en) 1973-07-11

Family

ID=22434822

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1297372A Expired GB1323271A (en) 1971-03-26 1972-03-20 Electronic particle analyzing apparatus with aperture tube

Country Status (12)

Country Link
US (1) US3714565A (en)
JP (1) JPS5331389B1 (en)
AU (1) AU454030B2 (en)
CA (1) CA943190A (en)
CH (1) CH584897A5 (en)
FR (1) FR2130473B1 (en)
GB (1) GB1323271A (en)
IL (1) IL39027A (en)
IT (1) IT952314B (en)
NL (1) NL7203716A (en)
SE (1) SE380349B (en)
ZA (1) ZA721897B (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3939409A (en) * 1974-08-01 1976-02-17 Coulter Electronics, Inc. Particle study device and sample metering means used therein
US4157498A (en) * 1977-08-01 1979-06-05 Miles Laboratories, Inc. Flow-through type particle analyzing apparatus
GB8414856D0 (en) * 1984-06-11 1984-07-18 Alcan Int Ltd Detection and measurement of suspended particles in molten metal
DE3923544C1 (en) * 1989-07-15 1990-10-18 Hartmann & Braun Ag, 6000 Frankfurt, De
DK111990D0 (en) * 1990-05-04 1990-05-04 Biometic Aps APPARATUS AND PROCEDURE FOR ANALYSIS OF A LIQUID SUSPENSION
WO1995017659A1 (en) * 1993-12-23 1995-06-29 Abbott Laboratories Method of making a stress relieved count probe
US5402062A (en) * 1993-12-23 1995-03-28 Abbott Laboratories Mechanical capture of count wafer for particle analysis
US5432992A (en) * 1993-12-23 1995-07-18 Abbott Laboratories Method of making count probe with removable count wafer
GB9526652D0 (en) * 1995-12-29 1996-02-28 Shine Thomas A Electrode assembly
US6175227B1 (en) 1997-07-03 2001-01-16 Coulter International Corp. Potential-sensing method and apparatus for sensing and characterizing particles by the Coulter principle
US6111398A (en) * 1997-07-03 2000-08-29 Coulter International Corp. Method and apparatus for sensing and characterizing particles
EP1178315A1 (en) * 2000-07-31 2002-02-06 Albrecht Dr.med. Priv.Doz. Lepple-Wienhues Method and apparatus for examining cells using the patch clamp method
DK3058337T3 (en) 2013-10-15 2019-04-15 Ecole Polytechnique Fed Lausanne Epfl MEASUREMENT TIP WITH ELECTRIC IMPEDANCE SENSOR
WO2016166729A1 (en) 2015-04-15 2016-10-20 Ecole Polytechnique Federale De Lausanne (Epfl) Devices, systems and methods for dispensing and analysing particles
US10910749B2 (en) 2017-04-11 2021-02-02 Ecole Polytechnique Federale De Lausanne (Epfl) Tip connector for fluidic and electrical connection

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3287638A (en) * 1962-10-02 1966-11-22 Univ Iowa State Res Found Inc Method of counting erythrocytes utilizing high frequency current
NL137000C (en) * 1964-03-26
US3395343A (en) * 1964-07-21 1968-07-30 Coulter Electronics Electronic particle study apparatus and vessel construction therefor
US3551802A (en) * 1968-02-08 1970-12-29 Leeds & Northrup Co Electrolytic conductivity cell employing a tube and a barrier member
US3539919A (en) * 1968-04-25 1970-11-10 Coulter Electronics Method for making glass aperture tube and product produced thereby

Also Published As

Publication number Publication date
ZA721897B (en) 1973-11-28
FR2130473B1 (en) 1973-06-29
DE2213524B2 (en) 1976-07-15
US3714565A (en) 1973-01-30
DE2213524A1 (en) 1972-10-05
CH584897A5 (en) 1977-02-15
SE380349B (en) 1975-11-03
CA943190A (en) 1974-03-05
IL39027A0 (en) 1972-05-30
JPS5331389B1 (en) 1978-09-02
FR2130473A1 (en) 1972-11-03
IL39027A (en) 1974-06-30
IT952314B (en) 1973-07-20
AU4018372A (en) 1973-09-27
AU454030B2 (en) 1974-09-25
NL7203716A (en) 1972-09-28

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee