CA968852A - Aperture tube assembly for a particle study apparatus - Google Patents

Aperture tube assembly for a particle study apparatus

Info

Publication number
CA968852A
CA968852A CA149,894A CA149894A CA968852A CA 968852 A CA968852 A CA 968852A CA 149894 A CA149894 A CA 149894A CA 968852 A CA968852 A CA 968852A
Authority
CA
Canada
Prior art keywords
tube assembly
aperture tube
study apparatus
particle study
particle
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
CA149,894A
Other versions
CA149894S (en
Inventor
Walter R. Hogg
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
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of CA968852A publication Critical patent/CA968852A/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
    • 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
    • G01N15/134—Devices using two or more 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)
  • Sampling And Sample Adjustment (AREA)
CA149,894A 1971-08-23 1972-08-21 Aperture tube assembly for a particle study apparatus Expired CA968852A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17398871A 1971-08-23 1971-08-23

Publications (1)

Publication Number Publication Date
CA968852A true CA968852A (en) 1975-06-03

Family

ID=22634352

Family Applications (1)

Application Number Title Priority Date Filing Date
CA149,894A Expired CA968852A (en) 1971-08-23 1972-08-21 Aperture tube assembly for a particle study apparatus

Country Status (2)

Country Link
US (1) US3746977A (en)
CA (1) CA968852A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3930736A (en) * 1974-07-01 1976-01-06 Coulter Electronics, Inc. Aperture tube with attached thief

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1969081A (en) * 1930-12-26 1934-08-07 Smidth & Co As F L Apparatus for use in the determination of grain sizes in granular material
US3444464A (en) * 1965-11-26 1969-05-13 Coulter Electronics Multiple aperture fittings for particle analyzing apparatus

Also Published As

Publication number Publication date
US3746977A (en) 1973-07-17

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