GB2337598B - Particle sizing apparatus - Google Patents

Particle sizing apparatus

Info

Publication number
GB2337598B
GB2337598B GB9914539A GB9914539A GB2337598B GB 2337598 B GB2337598 B GB 2337598B GB 9914539 A GB9914539 A GB 9914539A GB 9914539 A GB9914539 A GB 9914539A GB 2337598 B GB2337598 B GB 2337598B
Authority
GB
United Kingdom
Prior art keywords
particle sizing
sizing apparatus
particle
sizing
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 - Fee Related
Application number
GB9914539A
Other versions
GB9914539D0 (en
GB2337598A (en
Inventor
Michael Anthony Wood
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.)
Microbial Systems Ltd
Original Assignee
Microbial Systems Ltd
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 GBGB9624096.5A external-priority patent/GB9624096D0/en
Application filed by Microbial Systems Ltd filed Critical Microbial Systems Ltd
Publication of GB9914539D0 publication Critical patent/GB9914539D0/en
Publication of GB2337598A publication Critical patent/GB2337598A/en
Application granted granted Critical
Publication of GB2337598B publication Critical patent/GB2337598B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G01N2015/137—Cleaning
    • 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
    • G01N2015/138—Detecting blocking debris

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 Analyzing Materials By The Use Of Electric Means (AREA)
  • Sampling And Sample Adjustment (AREA)
GB9914539A 1996-11-20 1997-11-20 Particle sizing apparatus Expired - Fee Related GB2337598B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9624096.5A GB9624096D0 (en) 1996-11-20 1996-11-20 Apparatus and method of use thereof
GB9724611A GB2319618B (en) 1996-11-20 1997-11-20 Particle sizing apparatus

Publications (3)

Publication Number Publication Date
GB9914539D0 GB9914539D0 (en) 1999-08-25
GB2337598A GB2337598A (en) 1999-11-24
GB2337598B true GB2337598B (en) 2000-08-16

Family

ID=26310433

Family Applications (4)

Application Number Title Priority Date Filing Date
GB9914535A Expired - Fee Related GB2337597B (en) 1996-11-20 1997-11-20 Particle sizing apparatus
GB9914541A Expired - Fee Related GB2337599B (en) 1996-11-20 1997-11-20 Particle sizing apparatus
GB9914539A Expired - Fee Related GB2337598B (en) 1996-11-20 1997-11-20 Particle sizing apparatus
GB9914542A Expired - Fee Related GB2337600B (en) 1996-11-20 1997-11-20 Particle sizing apparatus

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB9914535A Expired - Fee Related GB2337597B (en) 1996-11-20 1997-11-20 Particle sizing apparatus
GB9914541A Expired - Fee Related GB2337599B (en) 1996-11-20 1997-11-20 Particle sizing apparatus

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB9914542A Expired - Fee Related GB2337600B (en) 1996-11-20 1997-11-20 Particle sizing apparatus

Country Status (1)

Country Link
GB (4) GB2337597B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ537147A (en) 2004-12-13 2007-06-29 Australo Ltd Method and apparatus for particle analysis
CN105928755A (en) * 2016-04-20 2016-09-07 上海建工材料工程有限公司 Sealing method for impermeability test of concrete
CN112710450B (en) * 2020-12-16 2021-12-28 中国矿业大学 Hydraulic pulse blockage removal experiment system and method for fracture blockage caused by particles

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1268790A (en) * 1968-07-22 1972-03-29 Coulter Electronics Bath for a plurality of aperture tubes
US3930736A (en) * 1974-07-01 1976-01-06 Coulter Electronics, Inc. Aperture tube with attached thief
US4078211A (en) * 1976-09-29 1978-03-07 Coulter Electronics, Inc. Method and apparatus for balancing particle detecting signals generated in a particle study device having multiple apertures
GB1597904A (en) * 1977-02-15 1981-09-16 Coulter Electronics Particle testing apparatus
WO1985001108A1 (en) * 1983-08-29 1985-03-14 Coulter Corporation Method and apparatus for removing foreign matter from a flow cell of a particle study device
GB2163555A (en) * 1984-08-24 1986-02-26 Descartes Universite Rene Apparatus and process for determining the deformability of the red corpuscles in the blood

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2656508A (en) * 1949-08-27 1953-10-20 Wallace H Coulter Means for counting particles suspended in a fluid
US3259891A (en) * 1964-05-01 1966-07-05 Coulter Electronics Debris alarm
US3395344A (en) * 1964-11-25 1968-07-30 Coulter Electronics Particle studying apparatus with selfclearing scanner element
DD102215A1 (en) * 1973-02-02 1973-12-12
US3963984A (en) * 1974-11-04 1976-06-15 Coulter Electronics, Inc. Method and system for cleaning an aperture in a particle study device
FR2472183B1 (en) * 1979-12-12 1986-03-07 Coulter Electronics METHOD FOR CLEANING AN OPENING FOR A PARTICLE STUDY DEVICE AND APPARATUS FOR CARRYING OUT SAID METHOD
US4412175A (en) * 1981-04-30 1983-10-25 Coulter Electronics, Inc. Debris alarm
US4450435A (en) * 1981-11-30 1984-05-22 Bobby Dencil James Analog debris alarm
GB8505047D0 (en) * 1985-02-27 1985-03-27 Alcan Int Ltd Studying particles
EP0279000B1 (en) * 1987-02-17 1993-07-21 Ratcom, Inc. Flow cytometry
US4977517A (en) * 1988-09-21 1990-12-11 Toni Diagnostics, Inc. Leak and clog detection and removal system for use with particle counters

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1268790A (en) * 1968-07-22 1972-03-29 Coulter Electronics Bath for a plurality of aperture tubes
US3930736A (en) * 1974-07-01 1976-01-06 Coulter Electronics, Inc. Aperture tube with attached thief
US4078211A (en) * 1976-09-29 1978-03-07 Coulter Electronics, Inc. Method and apparatus for balancing particle detecting signals generated in a particle study device having multiple apertures
GB1597904A (en) * 1977-02-15 1981-09-16 Coulter Electronics Particle testing apparatus
WO1985001108A1 (en) * 1983-08-29 1985-03-14 Coulter Corporation Method and apparatus for removing foreign matter from a flow cell of a particle study device
GB2163555A (en) * 1984-08-24 1986-02-26 Descartes Universite Rene Apparatus and process for determining the deformability of the red corpuscles in the blood

Also Published As

Publication number Publication date
GB9914542D0 (en) 1999-08-25
GB9914535D0 (en) 1999-08-25
GB9914539D0 (en) 1999-08-25
GB2337600B (en) 2000-08-16
GB9914541D0 (en) 1999-08-25
GB2337600A (en) 1999-11-24
GB2337597A (en) 1999-11-24
GB2337597B (en) 2000-08-16
GB2337598A (en) 1999-11-24
GB2337599B (en) 2000-08-16
GB2337599A (en) 1999-11-24

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20101120