GB1273172A - Particle studying apparatus - Google Patents

Particle studying apparatus

Info

Publication number
GB1273172A
GB1273172A GB39838/69A GB3983869A GB1273172A GB 1273172 A GB1273172 A GB 1273172A GB 39838/69 A GB39838/69 A GB 39838/69A GB 3983869 A GB3983869 A GB 3983869A GB 1273172 A GB1273172 A GB 1273172A
Authority
GB
United Kingdom
Prior art keywords
particle
detecting device
analyzer
transformation circuit
constant voltage
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
GB39838/69A
Other languages
English (en)
Inventor
Sheldon L Epstein
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
Priority to GB39838/69A priority Critical patent/GB1273172A/en
Priority to NL6912128A priority patent/NL6912128A/xx
Priority to AU59284/69A priority patent/AU435220B2/en
Priority to DE1940498A priority patent/DE1940498C3/de
Priority to FR6927342A priority patent/FR2057274A5/fr
Publication of GB1273172A publication Critical patent/GB1273172A/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
    • G01N15/131—Details
    • G01N15/132—Circuits
    • 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
    • G01N2015/135—Electrodes
    • G01N2015/136—Scanning electrodes

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)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Geophysics And Detection Of Objects (AREA)
GB39838/69A 1969-08-08 1969-08-08 Particle studying apparatus Expired GB1273172A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB39838/69A GB1273172A (en) 1969-08-08 1969-08-08 Particle studying apparatus
NL6912128A NL6912128A (enExample) 1969-08-08 1969-08-08
AU59284/69A AU435220B2 (en) 1969-08-08 1969-08-08 Particle studying apparatus
DE1940498A DE1940498C3 (de) 1969-08-08 1969-08-08 Gerät zur Untersuchung von physikalischen Eigenschaften von mikroskopischen Teilchen in einer Suspension
FR6927342A FR2057274A5 (enExample) 1969-08-08 1969-08-08

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB39838/69A GB1273172A (en) 1969-08-08 1969-08-08 Particle studying apparatus

Publications (1)

Publication Number Publication Date
GB1273172A true GB1273172A (en) 1972-05-03

Family

ID=10411771

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39838/69A Expired GB1273172A (en) 1969-08-08 1969-08-08 Particle studying apparatus

Country Status (5)

Country Link
AU (1) AU435220B2 (enExample)
DE (1) DE1940498C3 (enExample)
FR (1) FR2057274A5 (enExample)
GB (1) GB1273172A (enExample)
NL (1) NL6912128A (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH618514A5 (enExample) 1977-08-25 1980-07-31 Contraves Ag
CN108663292B (zh) * 2018-05-14 2021-08-31 中国计量科学研究院 油液污染度分析仪校准方法

Also Published As

Publication number Publication date
DE1940498B2 (de) 1976-12-02
DE1940498A1 (de) 1971-02-18
AU5928469A (en) 1971-02-11
AU435220B2 (en) 1973-04-26
NL6912128A (enExample) 1971-02-10
DE1940498C3 (de) 1979-02-15
FR2057274A5 (enExample) 1971-05-21

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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