US3922223A - Multiple chromatographic column system - Google Patents

Multiple chromatographic column system Download PDF

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US3922223A
US3922223A US454655A US45465574A US3922223A US 3922223 A US3922223 A US 3922223A US 454655 A US454655 A US 454655A US 45465574 A US45465574 A US 45465574A US 3922223 A US3922223 A US 3922223A
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pressure
column
needle
regulator
output
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US454655A
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Gary L Burkhartsmeier
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US Department of Navy
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    • 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
    • G01N30/38—Flow patterns
    • G01N30/46—Flow patterns using more than one column
    • G01N30/466—Flow patterns using more than one column with separation columns in parallel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
    • B01D15/08—Selective adsorption, e.g. chromatography
    • B01D15/10—Selective adsorption, e.g. chromatography characterised by constructional or operational features
    • B01D15/16—Selective adsorption, e.g. chromatography characterised by constructional or operational features relating to the conditioning of the fluid carrier
    • B01D15/163—Pressure or speed conditioning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
    • B01D15/08—Selective adsorption, e.g. chromatography
    • B01D15/10—Selective adsorption, e.g. chromatography characterised by constructional or operational features
    • B01D15/18—Selective adsorption, e.g. chromatography characterised by constructional or operational features relating to flow patterns
    • B01D15/1864—Selective adsorption, e.g. chromatography characterised by constructional or operational features relating to flow patterns using two or more columns
    • B01D15/1885—Selective adsorption, e.g. chromatography characterised by constructional or operational features relating to flow patterns using two or more columns placed in parallel
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
    • B01D15/08—Selective adsorption, e.g. chromatography
    • B01D15/26—Selective adsorption, e.g. chromatography characterised by the separation mechanism
    • B01D15/34—Size selective separation, e.g. size exclusion chromatography, gel filtration, permeation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
    • B01D15/08—Selective adsorption, e.g. chromatography
    • B01D15/26—Selective adsorption, e.g. chromatography characterised by the separation mechanism
    • B01D15/36—Selective adsorption, e.g. chromatography characterised by the separation mechanism involving ionic interaction
    • B01D15/361—Ion-exchange

Definitions

  • the subject matter of the present invention is generally related to a device for performing pressurized column chromatography and more particularly a multiple chromatographic column system which will provide reliable pressurized multiple column chromatography.
  • the present invention is a multiple chromatographic column system comprising a multiple station column cabinet and a multiple outlet two stage pressure manifold. The system provides a reliable device which will perform pressurized multiple column chromatography.
  • a primary object of the present invention is to provide a multiple chromatographic system which will provide a reliable method of performing pressurized column chromatography on a mass production basis.
  • Another object of the present invention is to provide a device which precisely provides constant chromatographic parameters thus making chromatographic procedures more convenient, efficient and reliable.
  • Another object of the present invention is to provide a multiple chromatographic system which increases the productivity of a chromatographic system operation.
  • FIG. 1 is an isometric illustration of the multiple chromatographic column system and particularly showing the multiple station column cabinet and the multiple outlet pressure manifold.
  • the multiple chromatographic column system is generally comprised of multiple outlet pressure manifold system 11 and multiple station column cabinet 13.
  • the present column system illustrated in FIGS. 1 and 2 is limited to three chromatographic columns I-III; however, it is obvious that the number (n) of outlets could be unlimited.
  • Cabinet 13 is comprised of vertical support 15, manifold mounting brackets 17, shelf 19a, keyway 19b, and lower shelf 21.
  • Shelf 19a functions as a positioning support guide for the pressure columns I-III and/or n.
  • Lower shelf 21 is preferably made adjustable to allow clearance for various beaker configurations and effluent collection tubes.
  • Pressure manifold system 11 may be secured to mounting brackets 17 by any number of 'well known mounting methods.
  • pressure manifold system 11 is connected to an air pressure source S via air line 23 which is connected to adapter 25.
  • Adapter 25 is coupled to filter regulator 27.
  • Filter regulator 27 may include, if desired, a line pressure gauge 27A to measure the line air pressure from source S.
  • Filter regulator 27 is a standard filter regulator and provides effective filtration as well as controlled pressure. a B02 Norgren Filter-Regulator or the like may be used.
  • Filter regulator 27 is operatively coupled to manifold line-29.
  • Manifold line 29 is formed by interposing conduit pipes 29A between standard pipe tees 31, 33, and ,35. The distal end of the last tee should be plugged.
  • On/off needle valves 43, 45 and 47 are respectively connected to tees 31, 33 and 35 via reducers 37, 39 and 41. Reducers 37, 39 and 41 are preferably from about one-fourth inch to about one-half inch for proper air pressure maintenance; however, these measurements may vary depending on the specific operative limits desired.
  • On/off needle valves 43, 45 and 47 provide the proper flow/no flow conditions to the individual columns I-n. Moreover, needle valves 43, 45 and 47 provide for independent as well as simultaneous operation of the individual columns .In. Secondary regulators -49, 51, and 53 are operatively coupled to needle valves 43, 45, and 47 respectively. Secondary regulators 49, 51, and 53 can be a Type R06 Norgren device which is a standard pressure relief secondary regulation device.
  • Adapters 49A, 51A and 53A may be included in the system to measure column air pressure.
  • a pressure gauge 57 such as a magnehelic gauge may be individually operatively coupled to each adapter to test the individual system column pressure for columns I-n if desired.
  • Secondary regulators 49, 51, and 53 are operatively coupled to standard needle bleed valves 65, 67, and 69 via pipe tees 59, 61, and 63 respectively. Needle bleed valves 65, 67, and 69 allow for bleeding off the system pressure in the individual columns I-n if desired.
  • the needle valves also allow the operator to bleed the internal pressure of each column I-n when the manifold needle valves are in the off position.
  • pressure tubings 77, 79 and 81 are connected to the distal ends of tees 59, 6 1,
  • pressure column (83, 85, and 87) is generally comprised of reservoir 89, column stem 91, threaded sector 93, seal 95, hollow adapter 97, filler cap 99, stop cock 102 and spout 105.
  • Pressure column(s) (83, 85, 87) provides a reservoir for both the mobile phase gas liquid or solid as well as the stationary phase, gas, liquid or solid.
  • Adapter 97 fits into the aperture located in filler cap 99.
  • Seal 95 also having an aperture, is placed between hollow threaded section 93 and aligned with the base of adapter 97. Seal 95 and I adapter 97 are held in place by filler cap 99. The proinfiltrate the disc 101. Any standard sintered glass material will suffice for this specific type of filtration process.
  • a teflon mesh disc 101A may be superimposed over the surface area of disc 101 to prevent destruction of porous chromatographic beads which may be used in ion exchange and gel permeation chromatographic processes.
  • the operator will initiate the main air supply, adjust the manifold pressure system by setting the main filter-regulator 27to about -15 p.s.i., open one of the needle valves 1 from manifold line 29 to the individual regulators. Fi-
  • the system supplies an adjustable and a constant pressure to drive chromatographic columns.
  • This system provides constant chromatographic parameters thus making chromatographic procedures more convenient, more efficient, and more reliable.
  • this device makes it possible for one operator to simultaneously operate any number of chromatographic columns utilizing only one laboratory air outlet. This system greatly increases an operators productivity and provides a cost effective procedure. The danger to the column packing due to overpressurization is now eliminated.
  • the two-stage pressure manifold may be constructed of something other than brass fittings (i.e., nylon tubing and POLY-FLO connectors for cost reduction).
  • Alternative construction materials for the cabinet necessitate that it provide unobstructed view of the column packing and must be impervious to organic solvents.
  • the system functions to force the mobile phase material into stationary material under controlled pressure as well as volume.
  • a chromatographic column system for forcing a mobile phase material through a stationary phase material comprising:
  • said at least one on/off needle valve, said at least one secondary regulator, said at least one needle bleed valve, said at least one pressure column, and said at least one filter respectively comprise a plurality of on/off needle valves, a plurality of secondary regulators, a plurality of needle bleed valves, a plurality of pressure columns and a plurality of filters.

Abstract

A multiple chromatographic column system comprising a multiple station column cabinet and a multiple outlet two stage pressure manifold. The system provides a reliable device which will perform pressurized multiple column chromatography.

Description

United States Patent Burkhartsmeier 1 Nov. 25, 1975 1 MULTIPLE CHROMATOGRAPHIC 3,185,211 5/1965 Crawford. Jr. et al... 55/386 x O l SYSTEM 3,4l7,779 l2/1968 Golay 55/386 X 3,478,886 11/1969 Hornbeck 210/198 C 1 51 Inventor'- y Burkhartsmeier, Oakland, 3,518.874 7/1970 Hrdina 210/198 c Calif. 3,583,230 6/1971 Patterson. 210/198 C ,1,4 194 l. ..10198 [73] Assignee: The United States of America as 3 8 O 5 5 5/ 7 Fm et a 2 l C represented by the Secretary of the Navy, Wa hington, D C Primary Examiner-John Adee Filed: Mar. 1974 ttorney, Agent, or FirmR. S. Sciascia; Charles D. B.
urry [21] Appl. No.: 454,655
57 ABSTRACT [52] US. Cl. 210/198 C; /386 1 [51] Int. Cl. B01D 15/08 A multiple chromatographic column system compris- [58] Field of Search 210/31 C, 198 C; 55/67, ing a multiple station column cabinet and a multiple 55/197, 386 outlet two stage pressure manifold. The system provides a reliable device which will perform pressurized [56] References Cited multiple column chromatography UNITED STATES PATENTS 3,156,548 11/1964 Perry 55/386 x 1 Clam" 3 Drawmg Flgures I 1'1 g 49 53 (r l 5| 63 e9 65 US. Patent Nov. 25, 1975 Sheet10f2 3,922,223
SOLVENT FIG. 1
US. Patent Nov. 25, 1975 Sheet 2 of2 3,922,223
MULTIPLE CI-IROMATOGRAPIIIC COLUMN SYSTEM BACKGROUND OF THE INVENTION 1. Field of the Invention The subject matter of the present invention is generally related to a device for performing pressurized column chromatography and more particularly a multiple chromatographic column system which will provide reliable pressurized multiple column chromatography.
2. Description of the Prior Art Pressure chromatography is presently carried out by securing the column, usually on a burette stand, and
applying pressure to the column by subjecting it to air from a laboratory flowmeter and discontinuing the flow of air when sufficient pressure has been achieved to yield adequate solvent flow through the column. Therefore, the actual pressure inside the column is never constant, thus the chromatographic parameters are continually changing and the reliability of the chro- I SUMMARY OF THE INVENTION Briefly, the present invention is a multiple chromatographic column system comprising a multiple station column cabinet and a multiple outlet two stage pressure manifold. The system provides a reliable device which will perform pressurized multiple column chromatography. I
STATEMENT OF THE OBJECTS OF THE INVENTION A primary object of the present invention is to provide a multiple chromatographic system which will provide a reliable method of performing pressurized column chromatography on a mass production basis.
Another object of the present invention is to provide a device which precisely provides constant chromatographic parameters thus making chromatographic procedures more convenient, efficient and reliable.
Another object of the present invention is to provide a multiple chromatographic system which increases the productivity of a chromatographic system operation.
Other objects, advantages and novel features of the invention will become apparent from the following detailed description of the invention when considered in conjunction with the accompanying drawings wherein:
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an isometric illustration of the multiple chromatographic column system and particularly showing the multiple station column cabinet and the multiple outlet pressure manifold.
.umn of the multiple chromatographic column system illustrated in FIGS. 1 and 2.
DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS. 1 and 2, the multiple chromatographic column system is generally comprised of multiple outlet pressure manifold system 11 and multiple station column cabinet 13. The present column system illustrated in FIGS. 1 and 2 is limited to three chromatographic columns I-III; however, it is obvious that the number (n) of outlets could be unlimited.
Cabinet 13 is comprised of vertical support 15, manifold mounting brackets 17, shelf 19a, keyway 19b, and lower shelf 21. Shelf 19a functions as a positioning support guide for the pressure columns I-III and/or n. Lower shelf 21 is preferably made adjustable to allow clearance for various beaker configurations and effluent collection tubes. Pressure manifold system 11 may be secured to mounting brackets 17 by any number of 'well known mounting methods.
Referring to FIGS. 1 and 2 and particularly to FIG. 2, pressure manifold system 11 is connected to an air pressure source S via air line 23 which is connected to adapter 25. Adapter 25 is coupled to filter regulator 27. Filter regulator 27 may include, if desired, a line pressure gauge 27A to measure the line air pressure from source S. Filter regulator 27 is a standard filter regulator and provides effective filtration as well as controlled pressure. a B02 Norgren Filter-Regulator or the like may be used. Filter regulator 27 is operatively coupled to manifold line-29. Manifold line 29 is formed by interposing conduit pipes 29A between standard pipe tees 31, 33, and ,35. The distal end of the last tee should be plugged. On/off needle valves 43, 45 and 47 are respectively connected to tees 31, 33 and 35 via reducers 37, 39 and 41. Reducers 37, 39 and 41 are preferably from about one-fourth inch to about one-half inch for proper air pressure maintenance; however, these measurements may vary depending on the specific operative limits desired. On/off needle valves 43, 45 and 47 provide the proper flow/no flow conditions to the individual columns I-n. Moreover, needle valves 43, 45 and 47 provide for independent as well as simultaneous operation of the individual columns .In. Secondary regulators -49, 51, and 53 are operatively coupled to needle valves 43, 45, and 47 respectively. Secondary regulators 49, 51, and 53 can be a Type R06 Norgren device which is a standard pressure relief secondary regulation device. Adapters 49A, 51A and 53A may be included in the system to measure column air pressure. A pressure gauge 57 such as a magnehelic gauge may be individually operatively coupled to each adapter to test the individual system column pressure for columns I-n if desired. Secondary regulators 49, 51, and 53 are operatively coupled to standard needle bleed valves 65, 67, and 69 via pipe tees 59, 61, and 63 respectively. Needle bleed valves 65, 67, and 69 allow for bleeding off the system pressure in the individual columns I-n if desired. The needle valves also allow the operator to bleed the internal pressure of each column I-n when the manifold needle valves are in the off position.
Referring again to FIG. 2, pressure tubings 77, 79 and 81 are connected to the distal ends of tees 59, 6 1,
and 63 via hose connectors 71, 73 and 75. These pressure tubings 77, 79 and 81 are connected to pressure columns 83, 85 and 87 which will be described below. Since columns 83, 85 and 87 are structually and functionally similar, then a description of one column will be deemed to apply to all of the columns I-n.
Referring to FIG. 3 pressure column (83, 85, and 87) is generally comprised of reservoir 89, column stem 91, threaded sector 93, seal 95, hollow adapter 97, filler cap 99, stop cock 102 and spout 105. Pressure column(s) (83, 85, 87) provides a reservoir for both the mobile phase gas liquid or solid as well as the stationary phase, gas, liquid or solid.
For purposes of illustration a mobile phase solvent and a stationary phase gel is used; however, the function of the unique multiple chromatographic column system would not be limited to the use of these particular constituents. Adapter 97 fits into the aperture located in filler cap 99. Seal 95, also having an aperture, is placed between hollow threaded section 93 and aligned with the base of adapter 97. Seal 95 and I adapter 97 are held in place by filler cap 99. The proinfiltrate the disc 101. Any standard sintered glass material will suffice for this specific type of filtration process. I
A teflon mesh disc 101A may be superimposed over the surface area of disc 101 to prevent destruction of porous chromatographic beads which may be used in ion exchange and gel permeation chromatographic processes.
To initiate operation of one of the columns the operator will initiate the main air supply, adjust the manifold pressure system by setting the main filter-regulator 27to about -15 p.s.i., open one of the needle valves 1 from manifold line 29 to the individual regulators. Fi-
nally, set the individual air regulators until the desired solvent flow is achieved.
To discontinue solvent flow close needle valve of the individual regulator(s) and momentarily crack the corresponding bleed valve to release the internal column pressure. 3 The system supplies an adjustable and a constant pressure to drive chromatographic columns. This system provides constant chromatographic parameters thus making chromatographic procedures more convenient, more efficient, and more reliable. In addition, this device makes it possible for one operator to simultaneously operate any number of chromatographic columns utilizing only one laboratory air outlet. This system greatly increases an operators productivity and provides a cost effective procedure. The danger to the column packing due to overpressurization is now eliminated.
Miniaturization of system 11 may be possible. The two-stage pressure manifold may be constructed of something other than brass fittings (i.e., nylon tubing and POLY-FLO connectors for cost reduction). Alternative construction materials for the cabinet necessitate that it provide unobstructed view of the column packing and must be impervious to organic solvents. The system functions to force the mobile phase material into stationary material under controlled pressure as well as volume.
What is claimed is:
1. A chromatographic column system for forcing a mobile phase material through a stationary phase material comprising:
a. an air source;
b. said air source connected to the input of a primary regulator;
c. the output of said regulator connected to the input of a manifold;
d. the output of said manifold connected to the input of at least one on/off needle valve;
e. the output of said at least one on/off needle valve connected to at least one secondary regulator;
f. the output of said at least one secondary regulator connected both to at least one needle bleed valve and to at least one pressure column;
g. the output of said at least one pressure column connected to at least one filter;
h. the pressure in said at least one pressure column is maintained on or about a constant value; and
i. said at least one on/off needle valve, said at least one secondary regulator, said at least one needle bleed valve, said at least one pressure column, and said at least one filter respectively comprise a plurality of on/off needle valves, a plurality of secondary regulators, a plurality of needle bleed valves, a plurality of pressure columns and a plurality of filters.

Claims (1)

1. A CHROMATOGRAPHIC COLUMN SYSTEM FOR FORCING A MOBILE PHASE MATERIAL THROUGH A STATIONARY PHASE MATERIAL COMPRISING: A. AN AIR SOURCE, B. SAID AIR SOURCE CONNECTED TO THE INPUT OF A PRIMARY REGULATOR, C. THE OUTPUT OF SAID REGULATOR CONNETED TO THE INPUT OF A MANIFOLD, D. THE OUTPUT OF SAID MANIFOLD CONNECTED TO THE INPUT OF AT LEAST ONE ON/OFF NEEDLE VALVE, E. THE OUTPUT OF SAID AT LEAST ONE ON/OFF NEEDLE VALVE CONNECTED TO AT LEAST ONE SECONDARY REGULATOR, F. THE OUTPUT OF SAID AT LEAST ONE SECONDARY REGULATOR CONNECTED BOTH TO AT LEAST ONE NEEDLE BLEED VALVE AND TO AT LEAST ONE PRESSURE COLUMN, G. THE OUTPUT OF SAID AT LEAST ONE PRESSURE COLUMN CONNECTED TO AT LEAST ONE FILTER, H. THE PRESSURE IN SAID AT LEAST ONE PRESSURE COLUMN IS MAINTAINED ON OR ABOUT A CONSTANT VALUE, AND I. SAID AT LEAST ONE ON/OFF NEEDLE VALVE, SAID AT LEAST ONE SECONDARY REGULATOR, SAID AT LEAST ONE NEEDLE BLEED VALVE, SAID AT LEAST ONE PRESSURE COLUMN, AND SAID AT LEAST ONE FILTER RESPECTIVELY COMPRISE A PLURALITY OF ON/OFF NEEDLE VALVES, A PLURALITY OF SECONDARY REGULATORS, A PLURALITY OF NEEDLE BLEED VALVES, A PLURALITY OF PRESSURE COLUMNS AND A PLURALITY OF FILTERS.
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Cited By (18)

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Publication number Priority date Publication date Assignee Title
US4079009A (en) * 1975-10-14 1978-03-14 Max-Planck-Gesellschaft Zur Foerderung Der Wissenschaften, E.V. Apparatus for multiple column chromatography
US4341635A (en) * 1980-12-16 1982-07-27 Helena Laboratories Corporation Microchromatographic column and method
US4394263A (en) * 1980-12-04 1983-07-19 Carlo Erba Strumentazione S.P.A. Connecting device for pneumatic and/or hydraulic circuits in column chromatography
EP0179349A1 (en) * 1984-10-10 1986-04-30 The Perkin-Elmer Corporation Solvent pressurization
US4604198A (en) * 1984-05-18 1986-08-05 Amf Inc. Multicartridge chromatography cartridge housing
FR2611908A1 (en) * 1987-02-24 1988-09-09 Touzart Matignon Fournitures L Chromatography column assembly
US4797209A (en) * 1986-07-02 1989-01-10 Amicon Wright Ltd. Adjustable distribution cell apparatus
EP0425297A2 (en) * 1989-10-27 1991-05-02 Helena Laboratories Corporation Column analyzer system
US5207918A (en) * 1989-10-27 1993-05-04 Helena Laboratories Corporation Column analyzer system
US5228988A (en) * 1989-10-27 1993-07-20 Helena Laboratories Corporation Column analyzer system and improved chromatograph column for use in the system
US5265642A (en) * 1991-08-27 1993-11-30 Sp Industries Limited Partnership Pressure relief valve in a cap
US5443734A (en) * 1990-03-05 1995-08-22 Applied Separations, Inc. Programmable solid phase extraction and elution device
WO2000031528A1 (en) * 1998-11-20 2000-06-02 Sepiatec Gmbh Device and method for the parallel separation of substances by liquid chromatography
US20040040850A1 (en) * 1997-10-24 2004-03-04 Northeastern University Multichannel microscale system for high throughput preparative separation with comprehensive collection and analysis
US20050161377A1 (en) * 2004-01-23 2005-07-28 Fuji Photo Film Co., Ltd. Extraction system
US20070131615A1 (en) * 2005-12-07 2007-06-14 Moran Michael G Disposable chromatography valves and system
US20090218286A1 (en) * 2005-10-13 2009-09-03 Bisschops Marc Antonius T Device for chromatographic separations
US20110114549A1 (en) * 2009-11-13 2011-05-19 Agilent Technolgies, Inc. Microfluidic device comprising separation columns

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US3478886A (en) * 1967-03-31 1969-11-18 Atomic Energy Commission Graft-copolymer column support material for liquid-liquid partition chromatography
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US3583230A (en) * 1968-06-12 1971-06-08 Sondell Research Dev Co Sample injection method and apparatus
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US3518874A (en) * 1964-05-26 1970-07-07 Ceskoslovenska Akademie Ved Apparatus for analyzing mixtures of substances in one or a plurality of chromatographic columns
US3417779A (en) * 1967-01-09 1968-12-24 Perkin Elmer Corp Selectable concentration gas mixing apparatus
US3478886A (en) * 1967-03-31 1969-11-18 Atomic Energy Commission Graft-copolymer column support material for liquid-liquid partition chromatography
US3583230A (en) * 1968-06-12 1971-06-08 Sondell Research Dev Co Sample injection method and apparatus
US3810545A (en) * 1970-12-07 1974-05-14 Du Pont Centrifuge chromatography apparatus and system

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4079009A (en) * 1975-10-14 1978-03-14 Max-Planck-Gesellschaft Zur Foerderung Der Wissenschaften, E.V. Apparatus for multiple column chromatography
US4394263A (en) * 1980-12-04 1983-07-19 Carlo Erba Strumentazione S.P.A. Connecting device for pneumatic and/or hydraulic circuits in column chromatography
US4341635A (en) * 1980-12-16 1982-07-27 Helena Laboratories Corporation Microchromatographic column and method
US4604198A (en) * 1984-05-18 1986-08-05 Amf Inc. Multicartridge chromatography cartridge housing
EP0179349A1 (en) * 1984-10-10 1986-04-30 The Perkin-Elmer Corporation Solvent pressurization
US4797209A (en) * 1986-07-02 1989-01-10 Amicon Wright Ltd. Adjustable distribution cell apparatus
FR2611908A1 (en) * 1987-02-24 1988-09-09 Touzart Matignon Fournitures L Chromatography column assembly
US5589063A (en) * 1989-10-27 1996-12-31 Helena Laboratories Corporation Column analyzer system and improved chromatograph column for use in the system
EP0425297A2 (en) * 1989-10-27 1991-05-02 Helena Laboratories Corporation Column analyzer system
US5207918A (en) * 1989-10-27 1993-05-04 Helena Laboratories Corporation Column analyzer system
EP0425297A3 (en) * 1989-10-27 1993-05-05 Helena Laboratories Corporation Column analyzer system
US5228988A (en) * 1989-10-27 1993-07-20 Helena Laboratories Corporation Column analyzer system and improved chromatograph column for use in the system
US5595664A (en) * 1989-10-27 1997-01-21 Helena Laboratories Corporation Column analyzer system and improved chromatograph column for use in the system
US5358641A (en) * 1989-10-27 1994-10-25 Helena Laboratories Corporation Column analyzer system and improved chromatograph column for use in the system
US5441645A (en) * 1989-10-27 1995-08-15 Helena Laboratories Corporation Column analyzer system and improved chromatograph column for use in the system
US5443734A (en) * 1990-03-05 1995-08-22 Applied Separations, Inc. Programmable solid phase extraction and elution device
US5512168A (en) * 1990-03-05 1996-04-30 Applied Separations, Inc. Programmable solid phase extraction and elution device
US5265642A (en) * 1991-08-27 1993-11-30 Sp Industries Limited Partnership Pressure relief valve in a cap
US20040040850A1 (en) * 1997-10-24 2004-03-04 Northeastern University Multichannel microscale system for high throughput preparative separation with comprehensive collection and analysis
US7578915B2 (en) * 1997-10-24 2009-08-25 Northeastern University Multichannel microscale system for high throughput preparative separation with comprehensive collection and analysis
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