GB1145781A - Apparatus and method for determining the average amplitude of a plurality of randomly occurring electrical pulses - Google Patents
Apparatus and method for determining the average amplitude of a plurality of randomly occurring electrical pulsesInfo
- Publication number
- GB1145781A GB1145781A GB12177/66A GB1217766A GB1145781A GB 1145781 A GB1145781 A GB 1145781A GB 12177/66 A GB12177/66 A GB 12177/66A GB 1217766 A GB1217766 A GB 1217766A GB 1145781 A GB1145781 A GB 1145781A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulse
- signal
- circuit
- coulter
- histogrammic
- 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
Links
- 239000002245 particle Substances 0.000 abstract 5
- 239000003990 capacitor Substances 0.000 abstract 3
- 238000005259 measurement Methods 0.000 abstract 2
- 210000000601 blood cell Anatomy 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
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
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)
- Investigating Or Analysing Biological Materials (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US44148165A | 1965-03-22 | 1965-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1145781A true GB1145781A (en) | 1969-03-19 |
Family
ID=23753028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12177/66A Expired GB1145781A (en) | 1965-03-22 | 1966-03-18 | Apparatus and method for determining the average amplitude of a plurality of randomly occurring electrical pulses |
Country Status (8)
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3793587A (en) * | 1971-03-10 | 1974-02-19 | Licentia Gmbh | Particle volume and cross-section measurement |
| US3973194A (en) * | 1972-08-07 | 1976-08-03 | Becton, Dickinson And Company | Particle counter |
| CH549210A (de) * | 1972-09-14 | 1974-05-15 | Contraves Ag | Verfahren und messgeraet zur bestimmung des wahren mittleren volumens von in einer elektrolytisch leitenden fluessigkeit suspendierten teilchen. |
| US3961249A (en) * | 1973-10-15 | 1976-06-01 | Coulter Electronics, Inc. | Particle size distribution analyzation employing trailing edge differentiation |
| US3987391A (en) * | 1974-12-02 | 1976-10-19 | Coulter Electronics, Inc. | Method and apparatus for correcting total particle volume error due to particle coincidence |
| US4374644A (en) * | 1981-04-06 | 1983-02-22 | Coulter Electronics, Inc. | Blood cell volume monitoring |
| US4706207A (en) * | 1985-06-24 | 1987-11-10 | Nova Celltrak, Inc. | Count accuracy control means for a blood analyses system |
| US6714287B2 (en) * | 2001-01-02 | 2004-03-30 | Becton, Dickinson And Company | Apparatus for determining the volume of single red blood cells |
| US6717657B2 (en) * | 2001-01-02 | 2004-04-06 | Becton, Dickinson And Company | Apparatus for measuring the volume of individual red blood cells |
| US6633368B2 (en) * | 2001-01-02 | 2003-10-14 | Becton, Dickinson And Company | Method for determining the volume of single red blood cells |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3028501A (en) * | 1959-06-01 | 1962-04-03 | Rieter Joh Jacob & Cie Ag | Method for measuring the volume or the weight of bodies having different size and irregularly passing through a channel or of accumulations of such bodies, particularly of fibre tufts |
| US3275834A (en) * | 1963-04-01 | 1966-09-27 | Daniel S Stevens | Apparatus for analyzing the size and number of particles in suspension |
-
0
- FR FR1471863D patent/FR1471863A/fr not_active Expired
-
1965
- 1965-03-22 US US441481A patent/US3473010A/en not_active Expired - Lifetime
-
1966
- 1966-03-18 GB GB12177/66A patent/GB1145781A/en not_active Expired
- 1966-03-19 DE DE19661548609 patent/DE1548609B2/de not_active Withdrawn
- 1966-03-21 SE SE3695/66A patent/SE317215B/xx unknown
- 1966-03-22 JP JP41017358A patent/JPS523314B1/ja active Pending
- 1966-03-22 CH CH421066A patent/CH463132A/fr unknown
- 1966-03-22 NL NL666603741A patent/NL141294B/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE1548609B2 (de) | 1971-09-02 |
| FR1471863A (US07608600-20091027-C00054.png) | 1967-05-10 |
| JPS523314B1 (US07608600-20091027-C00054.png) | 1977-01-27 |
| DE1548609A1 (de) | 1969-05-14 |
| SE317215B (US07608600-20091027-C00054.png) | 1969-11-10 |
| NL6603741A (US07608600-20091027-C00054.png) | 1966-09-23 |
| CH463132A (fr) | 1968-09-30 |
| US3473010A (en) | 1969-10-14 |
| NL141294B (nl) | 1974-02-15 |
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