GB1084952A - Method and means for controlling the flow in a chromatographic column - Google Patents
Method and means for controlling the flow in a chromatographic columnInfo
- Publication number
- GB1084952A GB1084952A GB410064A GB410064A GB1084952A GB 1084952 A GB1084952 A GB 1084952A GB 410064 A GB410064 A GB 410064A GB 410064 A GB410064 A GB 410064A GB 1084952 A GB1084952 A GB 1084952A
- Authority
- GB
- United Kingdom
- Prior art keywords
- flow
- restriction
- rate
- cam
- duct
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/26—Conditioning of the fluid carrier; Flow patterns
- G01N30/28—Control of physical parameters of the fluid carrier
- G01N30/32—Control of physical parameters of the fluid carrier of pressure or speed
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
Abstract
1,084,952. Regulating fluid flow. PYE Ltd. Jan.20, 1965 [Jan. 31, 1964], No.4100/64. Heading G3H. [Also in Division F2] The pressure of gas flowing to a chromatographic column is adjusted by a pressure regulator PR, Fig. 1, and the desired flow-rate is set by a dial D which adjusts a cam C connected to a variable restriction V. Upon closing a switch S an electric motor M is energized to rotate the cam C through gearing GB; when the maximum flow-rate is attained a stop X opens a microswitch MS to de-energize the motor so providing a constant flow-rate. If the stop X is positioned clear of the micro-switch or a further stop is provided, a cyclic change of flow-rate results. A pressure controller DP is disposed downstream of the restriction. The restriction may take the form of a piston 2 Fig. 3 (not shown), with a tapered flat F and restricted inlet and outlet ducts Dl, D2; a third duct D3 is provided so that a constant-pressure gas urges a piston roller 3 against the cam C, Fig. 1. Another form of restriction, is comprised by a cylindrical rod 7 Fig. 4 (not shown), with a flat F coacting with a duct D2, the rod depending from a carrier 8 the rod end of which has a sealing ring 11 to fully close-off the duct D2. The carrier 8 is coupled to a piston 2 through a ball 13 and a loading spring 10. The device may be used to control flow to a chromatographic column in which the carrier is a liquid; in this case the restriction has one inlet sequentially connected to each one of a series of outlets of gradually varying flow-resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB410064A GB1084952A (en) | 1964-01-31 | 1964-01-31 | Method and means for controlling the flow in a chromatographic column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB410064A GB1084952A (en) | 1964-01-31 | 1964-01-31 | Method and means for controlling the flow in a chromatographic column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1084952A true GB1084952A (en) | 1967-09-27 |
Family
ID=9770764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB410064A Expired GB1084952A (en) | 1964-01-31 | 1964-01-31 | Method and means for controlling the flow in a chromatographic column |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1084952A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021108133A1 (en) * | 2019-11-25 | 2021-06-03 | Waters Technologies Corporation | Sample injection for liquid chromatography using split solvent flow |
-
1964
- 1964-01-31 GB GB410064A patent/GB1084952A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021108133A1 (en) * | 2019-11-25 | 2021-06-03 | Waters Technologies Corporation | Sample injection for liquid chromatography using split solvent flow |
| CN114746748A (en) * | 2019-11-25 | 2022-07-12 | 沃特世科技公司 | Liquid chromatography injection using split solvent flow |
| US12025593B2 (en) | 2019-11-25 | 2024-07-02 | Waters Technologies Corporation | Sample injection for liquid chromatography using split solvent flow |
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