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1. WO2004112960 - FLOW RATE CONTROL

Publication Number WO/2004/112960
Publication Date 29.12.2004
International Application No. PCT/US2004/015838
International Filing Date 19.05.2004
IPC
G01N 30/16 2006.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
30Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography
02Column chromatography
04Preparation or injection of sample to be analysed
16Injection
G01N 30/32 2006.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
30Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography
02Column chromatography
26Conditioning of the fluid carrier; Flow patterns
28Control of physical parameters of the fluid carrier
32of pressure or speed
CPC
G01N 2030/324
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
30Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography ; or field flow fractionation;
02Column chromatography
26Conditioning of the fluid carrier; Flow patterns
28Control of physical parameters of the fluid carrier
32of pressure or speed
324speed, flow rate
G01N 30/16
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
30Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography ; or field flow fractionation;
02Column chromatography
04Preparation or injection of sample to be analysed
16Injection
Y10T 436/2575
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
436Chemistry: analytical and immunological testing
25including sample preparation
2575Volumetric liquid transfer
Applicants
  • EKSIGENT TECHNOLOGIES LLC [US]/[US] (AllExceptUS)
  • NEYER, David, W. [CA]/[US] (UsOnly)
  • RAKESTRAW, David, J. [US]/[US] (UsOnly)
  • REHM, Jason, E. [US]/[US] (UsOnly)
Inventors
  • NEYER, David, W.
  • RAKESTRAW, David, J.
  • REHM, Jason, E.
Agents
  • SHELDON, Jeffrey, G.
Priority Data
10/441,64020.05.2003US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) FLOW RATE CONTROL
(FR) COMMANDE DE LA VITESSE D'ECOULEMENT
Abstract
(EN) A liquid sample is prepared at a preparation site and then processed, e.g. in an HPLC column. Fluid supplies (20A, 20B) supply working fluids at flow rates measured by flow meters (24A, 24B). Rotary valve (12) has six external ports (12A-12F). The outputs of the working fluids are combined and delivered to port (12A). Port (12B) is connected via loading conduit (181) to µLC column (18), the output of which flows to detector (26). A controller (22) controls the operation of valve (12) and supplies (20A, 20B), using input from the flow meters.
(FR) Selon l'invention, un échantillon liquide est préparé dans un site de préparation puis traité, notamment dans une colonne HPLC. L'échantillon est préparé et transporté jusqu'au dispositif à une vitesse d'écoulement qui est sensiblement inférieure à la vitesse d'écoulement dans le dispositif. Ces différences de vitesses d'écoulement sont, de préférence, dues à une alimentation en fluide de travail à vitesse variable qui entraîne l'échantillon à partir du site de préparation et à travers le dispositif.
Related patent documents
US2007037293This application is not viewable in PATENTSCOPE because the national phase entry has not been published yet or the national entry is issued from a country that does not share data with WIPO or there is a formatting issue or an unavailability of the application.
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