GB1351586A - Blood cell particle counting apparatus having automatic display and threshold setting - Google Patents

Blood cell particle counting apparatus having automatic display and threshold setting

Info

Publication number
GB1351586A
GB1351586A GB310473A GB310471A GB1351586A GB 1351586 A GB1351586 A GB 1351586A GB 310473 A GB310473 A GB 310473A GB 310471 A GB310471 A GB 310471A GB 1351586 A GB1351586 A GB 1351586A
Authority
GB
United Kingdom
Prior art keywords
blood cell
counting apparatus
particle counting
threshold setting
automatic display
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
GB310473A
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.)
GENERAL SCIENCE CORP
Original Assignee
GENERAL SCIENCE CORP
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 GENERAL SCIENCE CORP filed Critical GENERAL SCIENCE CORP
Publication of GB1351586A publication Critical patent/GB1351586A/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

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 Analysing Biological Materials (AREA)

Abstract

1351586 Particle counting apparatus GENERAL SCIENCE CORP 22 April 1971 [28 April 1970] 3104/73 Divided out of 1343465 Heading G1N The subject matter of the specification is disclosed in the Specification 1343465 but the claims are directed to a blood cell counting system in which red and white blood cell coded sample flasks are provided which when connected into the system set the appropriate decimal point indicator of a plurality of digit indicators of the counter and the multiplier indicator of the associated cell count.
GB310473A 1970-04-28 1971-04-22 Blood cell particle counting apparatus having automatic display and threshold setting Expired GB1351586A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3258370A 1970-04-28 1970-04-28

Publications (1)

Publication Number Publication Date
GB1351586A true GB1351586A (en) 1974-05-01

Family

ID=21865704

Family Applications (1)

Application Number Title Priority Date Filing Date
GB310473A Expired GB1351586A (en) 1970-04-28 1971-04-22 Blood cell particle counting apparatus having automatic display and threshold setting

Country Status (2)

Country Link
US (1) US3654439A (en)
GB (1) GB1351586A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3769582A (en) * 1970-05-18 1973-10-30 Contraves Ag Particle counting apparatus
US4503385A (en) * 1983-07-11 1985-03-05 Becton, Dickinson And Company Apparatus and method for regulating sheath fluid flow in a hydrodynamically focused fluid flow system
US4631483A (en) * 1984-02-01 1986-12-23 Coulter Electronics, Inc. Particle analyzing apparatus and method of moving particles in suspension through such apparatus
US4967187A (en) * 1989-05-15 1990-10-30 Research Equipment Corporation Method and apparatus for particle concentration detection using a cloud chamber

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2674675A (en) * 1951-06-14 1954-04-06 Adelor A Lambert Signaling system switch
US3020749A (en) * 1958-12-31 1962-02-13 Standard Oil Co Timer-computer
US3441352A (en) * 1965-01-25 1969-04-29 Nuclear Chicago Corp Colorimeter using interchangeable meters

Also Published As

Publication number Publication date
US3654439A (en) 1972-04-04

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee