GB1257461A - - Google Patents
Info
- Publication number
- GB1257461A GB1257461A GB1257461DA GB1257461A GB 1257461 A GB1257461 A GB 1257461A GB 1257461D A GB1257461D A GB 1257461DA GB 1257461 A GB1257461 A GB 1257461A
- Authority
- GB
- United Kingdom
- Prior art keywords
- column
- detector
- constant
- flow
- valve
- 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)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
1,257,461. Carrier gas flow control means for gas chromatography. PERKIN-ELMER Ltd. 15 Jan., 1969 [19 Oct., 1967], No. 47612/ 67. Heading B1X. A carrier gas flow control system which enables different constant flow rates to pass through gas chromatography column 3 and detector 4, e.g. a flame ionization detector, comprises gas flow restrictor 1 and flow regulator 2 with their low pressure and high pressure ends connected in parallel as shown, the low pressure end being connected through adjustable needle valve 5 to a point between column 3 and detector 4. With valve 5 closed a common constant flow rate is established in column 3 and detector 4; with valve 5 open to a particular setting, the flow through the by-pass is maintained at a constant pressure by regulator 2, and since the total pressure applied is constant, the flows through column 3 and detector 4 will both be constant though of different values. In modifications (see Figs. 2-4, not shown), the flow rates through the by-pass may be pre-set to particular values; the flow rate through the column 3 may be varied while maintaining the flow rate through detector 4 constant for any particular setting and automatic operation accomplished by governing valve 5 with a servo-amplifier controlled by a flow meter upstream of the column 3.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4761267 | 1967-10-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1257461A true GB1257461A (en) | 1971-12-22 |
Family
ID=10445615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1257461D Expired GB1257461A (en) | 1967-10-19 | 1967-10-19 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1257461A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0179349A1 (en) * | 1984-10-10 | 1986-04-30 | The Perkin-Elmer Corporation | Solvent pressurization |
| US20100154511A1 (en) * | 2008-12-23 | 2010-06-24 | Gordon Lambertus | Apparatus and method for multi-dimensional gas chromatography |
| CN108459124A (en) * | 2017-02-22 | 2018-08-28 | 株式会社岛津制作所 | Gas chromatograph |
-
1967
- 1967-10-19 GB GB1257461D patent/GB1257461A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0179349A1 (en) * | 1984-10-10 | 1986-04-30 | The Perkin-Elmer Corporation | Solvent pressurization |
| US20100154511A1 (en) * | 2008-12-23 | 2010-06-24 | Gordon Lambertus | Apparatus and method for multi-dimensional gas chromatography |
| US8613215B2 (en) * | 2008-12-23 | 2013-12-24 | Schlumberger Technology Corporation | Apparatus and method for multi-dimensional gas chromatography |
| CN108459124A (en) * | 2017-02-22 | 2018-08-28 | 株式会社岛津制作所 | Gas chromatograph |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |