摘要:
A sample injector (40) configured to introduce a sample fluid into a mobile phase, wherein the mobile phase is to be driven by a mobile phase drive (20) through a separation unit (30) for separating compounds of the sample fluid in the mobile phase, wherein the sample injector (40) comprises a metering device (200) being operable for displacing fluid and for intaking a metered amount of the sample fluid into the sample injector (40), an injector valve (90) being switchable for operating the sample injector (40) selectively in a sample intake mode in which the metering device (200) is operable to intake the sample fluid from a sample container (500), or a separation mode in which intaken sample fluid is driven between the mobile phase drive (20) and the separation unit (30) for separating the compounds, and a flow direction controller (202) configured for defining an enabled flow direction of fluid displaced by the metering device (200) and for defining a disabled flow direction.
摘要:
Die vorliegende Erfindung betrifft die Verwendung einer Citrat-Lösung zur affinitätschromatographischen Entfernung von C-reaktivem Protein (CRP) aus biologischen Flüssigkeiten, wobei die affinitatschronnatographische Entfernung von CRP durch (eine Ca 2+ -abhängige) Bindung von CRP an ein mit ω-Phosphonooxyalkylammoniunngruppen und/oder mit ω-Ammoniumalkoxy-hydroxy-phosphoryloxygruppen funktionalisiertes Säulenmaterial erfolgt.
摘要:
A process for separating a compound from solution in organic solvent by a chromatographic process, in particular liquid-liquid chromatography, in which prior to the chromatographic process the composition of the solution is changed by means of a process of organic solvent nanofiltration for a solvent exchange. Additionally or alternatively subsequent to the chromatographic process the output from the chromatographic process is subjected to a process of organic solvent nanofiltration to remove residual target compound and/or impurities in the output for solvent recovery.
摘要:
Methods and systems are disclosed for beds of porous materials such as adsorbents for solid phase extractions. A bed configuration stabilized first by a porous bag, and then by a cage. The cage is part of the bag, the cage is external to the bag, or the cage is inside the bag. The cage advances the preparation, properties and performance of the bed including cost, speed, efficiency, reproducibility, ruggedness and formation of fines. A bagged, caged bed of porous adsorb ant material is affixed to a motor to create a "paddle" configuration. The paddle can be used to stir a larger sample, thereby performing a solid phase extraction of the sample. Solid phase extraction of a sample can be performed by placing a caged bagged bed of porous adsorbant material in a small container that contains the sample of interest. The container may also be shaken or agitated in some manner to enhance the speed or amount of adsorption of the analyte of interest.
摘要:
Um ein wirtschaftliches Verfahren zur Aufreinigung oder Extraktion von Analyten, die in komplexen, insbesondere unpolaren Stoffgemischen vorliegen, zu schaffen, wird vorgeschlagen dass das Stoffgemisch in einem wasserfreien Medium auf eine mit Hydrazingruppen funktionalisierte Festphase aufgebracht, das Medium wieder abgetrennt sowie anschließend die Festphase mit organischem Lösungsmittel gewaschen wird und dass nach dem Waschen die Festphase mit einer Mischung aus organischen Lösungsmittel und wässriger Säure zur Freisetzung der Carbonylverbindung eluiert wird, wobei die Carbonyl- Verbindung gelöst in dem organischen Lösungsmittel und der wässrigen Säure erhalten wird.
摘要:
The present invention provides industrial scale expanded bed adsorption process for fractionation and isolation of bio-molecules from fluids, preferably proteins from milk and whey, in a cost-effective manner. This is accomplished by operating the expanded bed column at high temperatures of at last 40°C, combined with applying flow rates greater than 1.500 cm/hour.
摘要:
This disclosure relates to a process for extracting a perfluoropolyether. The process involves: (a) contacting a solvent comprising a liquid or supercritical carbon dioxide with a lubricating grease comprising a thickener and the perfluoropolyether in an extraction zone to form an extraction solution comprising an extracted perfluoropolyether; and (b) recovering the extracted perfluoropolyether from the extraction solution; wherein the recovered extracted perfluoropolyether comprises no more than about 2 wt % of the thickener.
摘要:
The present invention relates to a method for extracting circulating nucleic acids from a biological fluid. The method comprising the successive steps of providing the biological fluid supposed to contain the circulating nucleic acids. Then the biological fluid is contacted with a lysis solution comprising at least a chaotropic agent, a binding solution comprising at least a PEG derivative designed for cooperating with at least part of the circulating nucleic acids, wherein the binding solution is free of ethanol and isopropanol, and a solid support capable of capturing at least part of the circulating nucleic acid. Finally, the solid support is separated from the lysis solution, from the binding solution and from the biological fluid.
摘要:
The disclosure provides methods for processing a biological samples and determining the presence or an amount of a polypeptide in a biological sample, such as when the polypeptide is oxytocin or vasopressin.