GB1130970A - Improvements in or relating to apparatus for counting particles suspended in fluid - Google Patents
Improvements in or relating to apparatus for counting particles suspended in fluidInfo
- Publication number
- GB1130970A GB1130970A GB3478566A GB3478566A GB1130970A GB 1130970 A GB1130970 A GB 1130970A GB 3478566 A GB3478566 A GB 3478566A GB 3478566 A GB3478566 A GB 3478566A GB 1130970 A GB1130970 A GB 1130970A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aperture
- fluid
- piston
- test fluid
- counting particles
- 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
- 239000012530 fluid Substances 0.000 title abstract 6
- 239000002245 particle Substances 0.000 title abstract 2
- 239000007788 liquid Substances 0.000 abstract 1
- 239000012188 paraffin wax Substances 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
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)
- Automatic Analysis And Handling Materials Therefor (AREA)
Abstract
1,130,970. Counting particles. A. G. MACDONALD. Aug. 2, 1967 [Aug. 3, 1966], No. 34785/66. Heading G1N. [Also in Division G4] Apparatus of the Coulter type comprises means for passing the fluid through the aperture 3 first in one direction then in the other. The test fluid is contained in vessels 1, 2 separated by the aperture 3. A liquid such as paraffin which will not mix with the test fluid provides a connection through a pipe 4 and cylinder 5 to a piston 6 which is reciprocated by a motor 19. Resistive changes between electrodes 11, 12 are counted at 18 only when contacts 17 are closed during the midportion of the upward or downward movement of the piston. The number piston cycles, representing the volume of test fluid passed through the aperture, is registered at 20. The electrode 12 is flat or ball shaped (Fig. 2) to inhibit breaking the surface between the two fluids.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3478566A GB1130970A (en) | 1966-08-03 | 1966-08-03 | Improvements in or relating to apparatus for counting particles suspended in fluid |
| SE1106767A SE333271B (en) | 1966-08-03 | 1967-08-02 | DEVICE FOR COUNTING IN A FLUID SUSPENDED PARTICLES |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3478566A GB1130970A (en) | 1966-08-03 | 1966-08-03 | Improvements in or relating to apparatus for counting particles suspended in fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1130970A true GB1130970A (en) | 1968-10-16 |
Family
ID=10369922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3478566A Expired GB1130970A (en) | 1966-08-03 | 1966-08-03 | Improvements in or relating to apparatus for counting particles suspended in fluid |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB1130970A (en) |
| SE (1) | SE333271B (en) |
-
1966
- 1966-08-03 GB GB3478566A patent/GB1130970A/en not_active Expired
-
1967
- 1967-08-02 SE SE1106767A patent/SE333271B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| SE333271B (en) | 1971-03-08 |
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