GB1322686A - Apparatus for analysing particles suspended in a liquid - Google Patents
Apparatus for analysing particles suspended in a liquidInfo
- Publication number
- GB1322686A GB1322686A GB960472A GB960472A GB1322686A GB 1322686 A GB1322686 A GB 1322686A GB 960472 A GB960472 A GB 960472A GB 960472 A GB960472 A GB 960472A GB 1322686 A GB1322686 A GB 1322686A
- Authority
- GB
- United Kingdom
- Prior art keywords
- erythrocytes
- orifices
- march
- focusing
- liquid
- 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 title abstract 3
- 239000007788 liquid Substances 0.000 title 1
- 210000003743 erythrocyte Anatomy 0.000 abstract 2
- 238000005192 partition Methods 0.000 abstract 2
- 238000004458 analytical method Methods 0.000 abstract 1
- 210000004369 blood Anatomy 0.000 abstract 1
- 239000008280 blood Substances 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 238000000840 electrochemical analysis Methods 0.000 abstract 1
- 239000003792 electrolyte Substances 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 238000009652 hydrodynamic focusing Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000002844 melting 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
- G01N15/134—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)
- Investigating Or Analysing Biological Materials (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
1322686 Electro-chemical analysis LICENTIA-PATENT-VERWALTUNGS-GmbH 1 March 1972 [10 March 1971 11 Sept 1971 15 Jan 1972] 9604/72 Heading G1N Apparatus for Coulter-type particle analysis comprises two orifices in series as shown in Fig. 1, with a coaxial sample-feed-nozzle as described in Specification 1271708. This provides improved hydrodynamic focusing in the second orifice and enables particles with different volumes, or shapes or deforming properties may be determined by the relative amplitudes and/or durations of the pulses derived from the two apertures. The apparatus is particularly suitable for the estimation of lencocytes and erythrocytes in the blood. Erythrocytes are elastic and change shape due to pressure of the "focusing" electrolyte (see 15 in Fig. 2, (not shown)). Construction Fig. 3 The orifices 5, 7, and the jet 17 (formed by drilled sapphires) may be held co-axially and spaced on a wire while being mounted by melting into a glass tube 22. The tube has a conical outer surface to mate with holes inthe partitions 2, 3. Alternatively the partition 2 may be omitted and the electrode 10 mounted in the chamber 6.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19712111356 DE2111356A1 (en) | 1971-03-10 | 1971-03-10 | Device for determining the number and / or the size of particles suspended in a sample liquid |
| DE2145531A DE2145531C2 (en) | 1971-09-11 | 1971-09-11 | Particle counter/classifier -partic for blood corpuscles |
| DE19722201894 DE2201894A1 (en) | 1972-01-15 | 1972-01-15 | METHOD OF COUNTING AND CLASSIFYING PARTICLES SUSPENDED IN A TESTING LIQUID |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1322686A true GB1322686A (en) | 1973-07-11 |
Family
ID=27183256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB960472A Expired GB1322686A (en) | 1971-03-10 | 1972-03-01 | Apparatus for analysing particles suspended in a liquid |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPS5435115B1 (en) |
| BE (1) | BE780440A (en) |
| CA (1) | CA953786A (en) |
| CH (1) | CH558529A (en) |
| ES (1) | ES400399A1 (en) |
| FR (1) | FR2132004B1 (en) |
| GB (1) | GB1322686A (en) |
| IT (1) | IT953449B (en) |
| NL (1) | NL7202865A (en) |
| SE (1) | SE375614B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4165484A (en) * | 1977-03-23 | 1979-08-21 | Becton, Dickinson And Company | Particle counting apparatus utilizing various fluid resistors to maintain proper pressure differentials |
-
1972
- 1972-03-01 GB GB960472A patent/GB1322686A/en not_active Expired
- 1972-03-02 SE SE7202684A patent/SE375614B/xx unknown
- 1972-03-03 ES ES72400399A patent/ES400399A1/en not_active Expired
- 1972-03-03 NL NL7202865A patent/NL7202865A/xx not_active Application Discontinuation
- 1972-03-03 CH CH311772A patent/CH558529A/en not_active IP Right Cessation
- 1972-03-07 IT IT2152072A patent/IT953449B/en active
- 1972-03-09 BE BE780440A patent/BE780440A/en unknown
- 1972-03-09 CA CA136,644A patent/CA953786A/en not_active Expired
- 1972-03-09 FR FR7208301A patent/FR2132004B1/fr not_active Expired
- 1972-03-10 JP JP2463072A patent/JPS5435115B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR2132004A1 (en) | 1972-11-17 |
| SE375614B (en) | 1975-04-21 |
| JPS5435115B1 (en) | 1979-10-31 |
| ES400399A1 (en) | 1975-01-01 |
| NL7202865A (en) | 1972-09-12 |
| BE780440A (en) | 1972-07-03 |
| FR2132004B1 (en) | 1976-02-20 |
| CA953786A (en) | 1974-08-27 |
| IT953449B (en) | 1973-08-10 |
| CH558529A (en) | 1975-01-31 |
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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 | ||
| PCNP | Patent ceased through non-payment of renewal fee |