GB1400714A - Gradient making device - Google Patents
Gradient making deviceInfo
- Publication number
- GB1400714A GB1400714A GB4513471A GB4513471A GB1400714A GB 1400714 A GB1400714 A GB 1400714A GB 4513471 A GB4513471 A GB 4513471A GB 4513471 A GB4513471 A GB 4513471A GB 1400714 A GB1400714 A GB 1400714A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- liquid
- chamber
- capillary
- concentration
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/02—Burettes; Pipettes
- B01L3/0203—Burettes, i.e. for withdrawing and redistributing liquids through different conduits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/80—Forming a predetermined ratio of the substances to be mixed
-
- 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
- B04B5/0414—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles comprising test tubes
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Accessories For Mixers (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
Abstract
1400714 Mixing apparatus G D SEARLE & CO Ltd 13 Sept 1972 [28 Sept 1971] 45134/71 Heading B1C A device for making an isokinetic liquid density gradient in a centrifuge tube 27 comprises a closed mixing chamber 40 containing initially a liquid (sucrose) of lower concentration which is displaced by liquids of higher concentration into the tube 27 through a capillary tube 25, the open end of which is close to the bottom of the tube 27. The more concentrated liquid is supplied from a burette 44 having an optical level sensor 45 which closes a pinch-cock 43 and may stop any pump included in lines 26, 46, when sufficient liquid has been supplied to fill the tube 27 to the desired level; as the concentration in chamber 40 continuously increases, the more dense liquid will continuously displace the less dense upwards as it enters tube 27. Alternatively a sensor-associated with tube 25 may directly sense the level in tube 27. There is a magnetic stirrer 41 in chamber 40. The tube 27 is secured and centred between conical recesses in fixed and sliding blocks 28, 29 respectively and the capillary tube 25 is supported by a sliding block 23 which can be raised slowly to avoid turbulence by a variable speed motor (13, Figs. 1-3 not shown). A plurality of gradient-making devices may be mounted on a common stand having a common motor to raise all the capillary tubes simultaneously.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4513471A GB1400714A (en) | 1971-09-28 | 1971-09-28 | Gradient making device |
| DE19722247107 DE2247107A1 (en) | 1971-09-28 | 1972-09-26 | DEVICE AND METHOD FOR MANUFACTURING GRADIENTS |
| NL7213064A NL7213064A (en) | 1971-09-28 | 1972-09-27 | |
| BE789333A BE789333A (en) | 1971-09-28 | 1972-09-27 | DEVICE FOR THE PRODUCTION OF GRADIENTS |
| AU47142/72A AU4714272A (en) | 1971-09-28 | 1972-09-27 | Gradient making device |
| IT53018/72A IT966083B (en) | 1971-09-28 | 1972-09-27 | DEVICE FOR THE FORMATION OF DENSITY GRADIENTS OF LIQUIDS IN PARTICULAR FOR CENTRIFUGATION |
| FR7234408A FR2155424A5 (en) | 1971-09-28 | 1972-09-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4513471A GB1400714A (en) | 1971-09-28 | 1971-09-28 | Gradient making device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1400714A true GB1400714A (en) | 1975-07-23 |
Family
ID=10436018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4513471A Expired GB1400714A (en) | 1971-09-28 | 1971-09-28 | Gradient making device |
Country Status (7)
| Country | Link |
|---|---|
| AU (1) | AU4714272A (en) |
| BE (1) | BE789333A (en) |
| DE (1) | DE2247107A1 (en) |
| FR (1) | FR2155424A5 (en) |
| GB (1) | GB1400714A (en) |
| IT (1) | IT966083B (en) |
| NL (1) | NL7213064A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109142006A (en) * | 2018-11-09 | 2019-01-04 | 交通运输部天津水运工程科学研究所 | For microsensor accurate positioning and quick inbuilt device and method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3616728A1 (en) * | 1986-05-17 | 1987-11-19 | Strahlen Umweltforsch Gmbh | METHOD AND DEVICE FOR ISOLATING FRACTIONS OF MACROMOLECULES FROM DENSITY RADIATORS |
| CN110487675A (en) * | 2019-08-29 | 2019-11-22 | 新疆中泰纺织集团有限公司 | The method of viscose ripening degree detection device and detection viscose ripening degree |
-
1971
- 1971-09-28 GB GB4513471A patent/GB1400714A/en not_active Expired
-
1972
- 1972-09-26 DE DE19722247107 patent/DE2247107A1/en active Pending
- 1972-09-27 AU AU47142/72A patent/AU4714272A/en not_active Expired
- 1972-09-27 NL NL7213064A patent/NL7213064A/xx unknown
- 1972-09-27 BE BE789333A patent/BE789333A/en unknown
- 1972-09-27 IT IT53018/72A patent/IT966083B/en active
- 1972-09-28 FR FR7234408A patent/FR2155424A5/fr not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109142006A (en) * | 2018-11-09 | 2019-01-04 | 交通运输部天津水运工程科学研究所 | For microsensor accurate positioning and quick inbuilt device and method |
| CN109142006B (en) * | 2018-11-09 | 2023-09-05 | 交通运输部天津水运工程科学研究所 | Device and method for accurately positioning and quickly burying miniature sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2247107A1 (en) | 1973-04-05 |
| BE789333A (en) | 1973-03-27 |
| NL7213064A (en) | 1973-03-30 |
| AU4714272A (en) | 1974-04-04 |
| FR2155424A5 (en) | 1973-05-18 |
| IT966083B (en) | 1974-02-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| SU566516A3 (en) | Liquid dispensing apparatus | |
| GB2276104A (en) | Improved cytocentrifugation device,apparatus and method | |
| AU469636B2 (en) | Method of and device for measuring the flow rate of liquids | |
| BE817673A (en) | FLUID FLOW CONTROL AND DEVICE FOR INFUSING A LIQUID REMEDY INCLUDING SUCH CONTROL | |
| GB1066164A (en) | Serum separation apparatus and method | |
| GB1524454A (en) | Adsorption columns for use in radioimmunoassays | |
| GB1372436A (en) | Dispenser systems | |
| GB1163281A (en) | Improvements in an Automatic Pipetting Device | |
| GB1095272A (en) | An automatic pipette-device for transferring fluid from one container to another container | |
| GB1400714A (en) | Gradient making device | |
| US2294655A (en) | Apparatus for sampling liquid | |
| BE803431A (en) | APPARATUS FOR THE AUTOMATIC COLLECTION OF LIQUID SAMPLES | |
| GB1285014A (en) | Device for aerating liquids | |
| ES355539A1 (en) | Method of optimum operating a sedimentation apparatus and a device for carrying out the method | |
| FR2250111A1 (en) | Presampling device for liquids - removes samples required for quality control analysis from continuously flowing liquid | |
| US3453200A (en) | Apparatus for density gradient electrophoresis | |
| GB1264864A (en) | ||
| ES446129A1 (en) | Automatic chemical analysis apparatus | |
| GB1470541A (en) | Apparatus for measurement of gas absorption in chemical reac tions | |
| SU466429A1 (en) | A device for measuring the viscosity of liquids | |
| GB1394677A (en) | Sedimentation rate estimation devices | |
| ES375195A1 (en) | Method and device for flow control of liquor by vortex movement of the liquor | |
| GB1434914A (en) | Liquid delivery device | |
| FR2220281A1 (en) | Perfusion rate control and safety device - has photoelectric cells slidable on vertical tube parallel to vessel | |
| JPS5225665A (en) | Liquid measuring apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |