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GB1187547A - Density Gradient Fractionator - Google Patents

Density Gradient Fractionator

Info

Publication number
GB1187547A
GB1187547A GB2867268A GB2867268A GB1187547A GB 1187547 A GB1187547 A GB 1187547A GB 2867268 A GB2867268 A GB 2867268A GB 2867268 A GB2867268 A GB 2867268A GB 1187547 A GB1187547 A GB 1187547A
Authority
GB
United Kingdom
Prior art keywords
tube
piston
density gradient
fixed
chamber
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
GB2867268A
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.)
Instrumentation Specialties Co
Original Assignee
Instrumentation Specialties Co
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 Instrumentation Specialties Co filed Critical Instrumentation Specialties Co
Publication of GB1187547A publication Critical patent/GB1187547A/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
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/483—Physical analysis of biological material
    • G01N33/487—Physical analysis of biological material of liquid biological material
    • G01N33/49—Blood
    • G01N33/491—Blood by separating the blood components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B5/00—Other centrifuges
    • B04B5/04—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers
    • B04B5/0407—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06C—DIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY
    • G06C15/00—Computing mechanisms; Actuating devices therefor
    • G06C15/08—Multiplying or dividing devices; Devices for computing the exponent or root

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Biomedical Technology (AREA)
  • Pathology (AREA)
  • Biochemistry (AREA)
  • Mathematical Physics (AREA)
  • Immunology (AREA)
  • Hematology (AREA)
  • General Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Medicinal Chemistry (AREA)
  • Molecular Biology (AREA)
  • Food Science & Technology (AREA)
  • Biophysics (AREA)
  • Ecology (AREA)
  • Urology & Nephrology (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Optical Measuring Cells (AREA)
  • Centrifugal Separators (AREA)

Abstract

1,187,547. Syringes. INSTRUMENTATION SPECIALTIES CO. June 17, 1968 [Nov. 29, 1967], No. 28672/68. Heading F1R. [Also in Divisions G1 and G2] Apparatus for fractionating and transferring liquid from a density gradient tube 84, used in density gradient centrifugation, comprises a piston 40 fixed to a support arm 14 of a stand 10, and a tube support 70 which is axially movable relative to the piston 40 by a lead screw 54 rotated by a synchronous electric motor 64 and working in a half nut 56 fixed to stand arm 16, axial movement of tube 84 over piston 40 displacing the tube contents through piston passage 46 tapered opening 48 preventing turbulence. The tube contents pass through a chamber 20 having quartz windows 22 through which light from an ultra violet lamp 34 passes to an optical detector 36 comprising a filter and a photo-cell. As the optical characteristics of the liquid passing through chamber 20 vary, a varying output signal is produced by detector 36, and is recorded on a chart associated with a recorder 38. The axial position of tube 84 is indicated by a moving scale 76 sliding in an adjustable fixed scale 78. Tube 84 is returned to its lowermost position by loosening half nut 56, or by using a revercible motor.
GB2867268A 1967-11-29 1968-06-17 Density Gradient Fractionator Expired GB1187547A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US69261767A 1967-11-29 1967-11-29

Publications (1)

Publication Number Publication Date
GB1187547A true GB1187547A (en) 1970-04-08

Family

ID=37562140

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2867268A Expired GB1187547A (en) 1967-11-29 1968-06-17 Density Gradient Fractionator

Country Status (3)

Country Link
DE (1) DE1769685A1 (en)
FR (1) FR1574545A (en)
GB (1) GB1187547A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2161863A (en) * 1984-07-16 1986-01-22 Realex Corp Dispenser for pasty products
GB2249810A (en) * 1990-11-02 1992-05-20 David Wang Man Ho Discharging thinner to an ink tray

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0198767B1 (en) * 1985-04-16 1993-01-20 THE UNITED STATES OF AMERICA as represented by the Secretary United States Department of Commerce Method and apparatus for sequential fractionation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2161863A (en) * 1984-07-16 1986-01-22 Realex Corp Dispenser for pasty products
GB2249810A (en) * 1990-11-02 1992-05-20 David Wang Man Ho Discharging thinner to an ink tray
GB2249810B (en) * 1990-11-02 1994-04-27 David Wang Man Ho Discharging thinner to an ink tray

Also Published As

Publication number Publication date
FR1574545A (en) 1969-07-11
DE1769685A1 (en) 1971-01-21

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees