Abstract: A detector includes a light source configured to emit measurement light, a flow cell incorporating a cell channel through which a sample solution flows inside, a photodetector configured to detect light from the flow cell, an optical system configured to guide light from the light source to the flow cell and guide light from the flow cell to the photodetector, and a flow cell accommodating part configured to cover the flow cell so as to spatially separate the flow cell from the optical system. Of the side surfaces of the flow cell accommodating part, the side surfaces facing the light incident surface and the light exit surface of the flow cell are formed from wall surfaces made of a light transmissive material, or sealed by a light transmissive plate material.

Abstract: The invention provides methods for quantifying a non-ionic surfactant in a composition comprising a polypeptide and the non-ionic surfactant, where the quantification exhibits reduced interference between the non-ionic surfactant and the polypeptide. Also provided are methods where the composition further includes N-acetyl tryptophan, and the quantification exhibits reduced interference between the non-ionic surfactant, the polypeptide, and N-acetyl tryptophan.

Abstract: Development chambers suitable for use in thin layer chromatography are disclosed. Methods of making and using development chambers in thin layer chromatography are also disclosed.

Abstract: A container system is disclosed, where the container system includes a housing. A chromatography cartridge is disposed in the housing. A structural support in the housing is configured to retain the chromatography cartridge within the housing. The housing is configured to withstand a certain amount of pressure generated inside the chromatography cartridge. The chromatography cartridge is disposed in the housing either in horizontal or in vertical position.

Abstract: A parallel assembly of chromatography column modules, the assembly having one common assembly inlet and one common assembly outlet, each column module comprising a bed space filled with chromatography medium and each column module comprises integrated fluid conduits which when the column module is connected with other column modules are adapted to connect the bed space of the column module with the assembly inlet and the assembly outlet, wherein the total length and/or volume of the fluid conduit from the assembly inlet to one bed space together with the length and/or volume of the fluid conduit from the same bed space to the assembly outlet is substantially the same for all bed spaces and modules installed in the parallel assembly.

Abstract: Fuel sampling systems are disclosed. In one embodiment, a fuel sampling system includes an optical capture device and an analysis computing device that stores logic for implementing an evaluation sequence. During the evaluation sequence, the analysis computing device performs at least the following: receive a captured image from the optical capture device, identify areas of highest contrast in the captured image, and determine if the areas of highest contrast define a ring. If the areas of highest contrast define a ring, evaluate a contrast ratio between the ring and areas outside of the ring, and determine if the captured image reflects a fuel sample that exceeds a predetermined limit of propensity for settling. If so, indicate that the captured image reflects a fuel sample that is not acceptable. Otherwise, indicate that the captured image reflects a fuel sample that is acceptable.

Abstract: A hyper-productive chromatography technique includes providing a scalable and stackable chromatographic cassette, loading a sample to be processed, operating the scalable chromatographic cassette having an adsorptive chromatographic bed having a volume greater than 0.5 liter by establishing a flow at a linear velocity greater than 500 cm/hr with a residence time of the loading step of less than one minute.

Abstract: The invention relates to an organic-inorganic hybrid material which comprises an inorganic solid support on which are grafted organic molecules of the general formula (I) hereafter: and relates to methods allowing preparation of this hybrid material as well as to the uses of the hybrid material for extracting uranium(VI) from an aqueous medium comprising phosphoric acid.

Abstract: A parallel assembly (2; 11; 51) of chromatography column modules (3a,b,c; 13a,b,c; 53a,b,c, 90a, b), the assembly having one common assembly inlet (15; 55) and one common assembly outlet (17; 57), each column module comprising a bed space (29) filled with chromatography medium and each column module comprises integrated fluid conduits which when the column module is connected with other column modules are adapted to connect the bed space (29) of the column module with the assembly inlet (15; 55) and the assembly outlet (17; 57), wherein the total length and/or volume of the fluid conduit from the assembly inlet to one bed space together with the length and/or volume of the fluid conduit from the same bed space to the assembly outlet is substantially the same for all bed spaces and modules installed in the parallel assembly.

Abstract: A chromatographic medium having a separating agent layer, which is used to separate target substances, a filling agent layer, which is used to fix the target substances before the target substances are separated, and a permeation layer, which is used to enable permeation of the target substances separated by the separating agent layer, wherein the filling agent layer comes into contact with the separating agent layer via a plane that intersects the direction of development of the target substances in the chromatographic medium and is positioned on the upstream side in the direction of development, the separating agent layer exhibits separability of the target substances and optical responsiveness to ultraviolet rays, and the permeation layer exhibits an optical responsiveness that is different from those of the target substances and the separating agent layer.

Abstract: A chromatographic medium having a separating agent layer, which is used to separate target substances, and a permeation layer, which is laminated so as to face the separating agent layer and which is used to enable permeation of the target substances separated by the separating agent layer, wherein a region in which the permeation layer is not laminated is present on a part of the separating agent layer, the separating agent layer exhibits a separating property for the target substances and exhibits an optical responsiveness to ultraviolet rays, and the permeation layer exhibits an optical responsiveness that is different from those of the target substances and the separating agent layer.

Abstract: The present invention incorporates the camera from a mobile device (phone, iPad, etc.) to capture an image from a chemical test kit and process the image to provide chemical information. A simple user interface enables the automatic evaluation of the image, data entry, gps info, and maintain records from previous analyses.

Abstract: Provided is a chromatographic medium capable of separating and detecting target substances without the use of other components. A chromatographic medium having a separating agent layer, which is used to separate target substances, a filling agent layer, which is used to fix the target substances before the target substances are separated, and a permeation layer, which is used to enable permeation of the target substances separated by the separating agent layer, wherein the filling agent layer comes into contact with the separating agent layer via a plane that intersects the direction of development of the target substances in the chromatographic medium and is positioned on the upstream side in the direction of development, the separating agent layer exhibits separability of the target substances and exhibits optical responsiveness to ultraviolet rays, and the permeation layer exhibits optical responsiveness that are different from those of the target substances and the separating agent layer.

Abstract: Provided is a chromatographic medium having a separating agent layer, which is used to separate target substances, and a permeation layer, which is laminated so as to face the separating agent layer and which is used to enable permeation of the target substances separated by the separating agent layer, wherein a region in which the permeation layer is not laminated is present on a part of the separating agent layer, the separating agent layer exhibits separating property for the target substances and exhibits optical responsiveness to ultraviolet rays, and the permeation layer exhibits optical responsiveness that are different from those of the target substances and the separating agent layer.

Abstract: A chromatography column having a longitudinal axis and comprising a column wall with a first end and a second end, a first end plate assembly removably connectable to said first end of the column wall, a second end plate assembly removably connectable to said second end of the column wall, wherein said first end plate assembly, said column wall and said second end plate assembly are arranged along the longitudinal axis of the column wherein the column wall, and/or first end plate assembly and/or second end plate assembly is/are rotatable about an axis of rotation wherein said axis of rotation is parallel to the longitudinal axis of said column and positioned outside the column

Abstract: Reversed phase solid silica gel sorbent layers which can adhere with appropriate binders to a solid surface were developed. Pre-coated RP-rotors of different thickness were used These pre-coated RP-rotors can be used for Centrifugal Preparative Thin-layer Chromatography (CPTLC) using any appropriate device for Centrifugal Chromatography, like Chromatotron® or Cyclograph. Organic compounds including very polar ones can be separated and/or purified in a preparative scale from mixtures by these pre-coated RP-rotors, using different solvent systems. Also described is a new chromatographic separating device (hereinafter Chromato Rotor) and a method for separation of constituents from natural products or mixture of organic compounds using a centrifugal preparative chromatographic instrument with a separating element which contains a binder free sorbent layer packed or loaded between two supporting rotors and retained from moving outside by a porous filter. Only eluants pass through.

Abstract: A film based chromatography system for capturing and releasing a material from a fluid. In one embodiment, the system includes a housing containing a spiral wound film element. The film element includes a material-capturing web and a fluid passageway web. In another embodiment, the system includes a series of such housings containing film element(s). In a further embodiment, the system includes a plurality of housings arranged in parallel and in series in various combinations. Controllers and valves are arranged to allow flexible fluid processing. The spiral wound film maximizes material contact area in the limited space and volume of the housing.

Abstract: In an embodiment, a method for manufacturing a thin layer chromatography (“TLC”) plate is disclosed. The method includes forming a layer of elongated nanostructures (e.g., carbon nanotubes), priming the elongated nanostructures with one or more adhesion priming layers, and at least partially coating the elongated nanostructures with a coating. The coating includes a stationary phase and/or precursor of a stationary phase for use in chromatography. The stationary phase may be functionalized with hydroxyl groups by exposure to a base or acid. The stationary phase may further be treated with a silane (e.g., an amino silane) to improve the performance of the TLC plate. Embodiments for TLC plates and related methods are also disclosed.

Abstract: The invention provides novel porous materials that are useful in chromatographic processes, e.g., solid phase extraction, and that provide a number of advantages. Such advantages include superior wetting characteristics, selective capture of analytes of interest, and non-retention of interfering analytes. The invention advantageously provides novel porous materials having a large percentage of larger pores (i.e. wide pores). The invention advantageously provides novel porous materials that overcome the problems of SPE of biological samples.

Abstract: The present invention concerns a fluid distributor in a multistage column, each plate P of the column being divided into a certain number of panels Pa, and each panel Pa being equipped with a distributor of the invention, said distributor comprising: a) a solid jet breaker located substantially in the axis of the outlet opening of the collecting baffle of the panel Pa; b) an intermediate perforated plate extending laterally beyond the jet breaker, with a degree of opening in the range 10% to 40%; c) a distribution plate extending over the entire panel Pa, and with a degree of opening in the range 5% to 20%.

Abstract: A supported nanofiber medium useful for segregating chemical species is provided by selecting a polymer, selecting a substrate; and electrospinning the polymer to form a nanofiber medium on the supporting substrate. When the substrate is a planar surface, the nanofiber medium will be a mat suitable for conducting chromatographic separation. When the substrate is a filament, the nanofiber medium is an annular mat suitable for solid phase microextraction. The nanofiber media formed may be selectively cross-linked and at least partially carbonized to carbon nanofibers. The nanofiber medium is supported on the substrate without the use of binder material.

Abstract: The present invention relates to methods for securing a distributor plate to a backing plate of a chromatography column without the need for releasable fixing means such as screws or bolts. The invention also relates to chromatographic columns utilizing such methods. The method employs a negative pressure or vacuum to affix the distributor to the backing plate.

Abstract: An ultrathin-layer chromatography plate having a stationary phase with electrospun nanofibers comprising silica, wherein the stationary phase has a thickness from about 10 ?m to about 30 ?m.

Abstract: The invention relates to a chromatographic device for isolating and/or purifying double-stranded nucleic acids, preferably double-stranded DNA, from a mixture of such nucleic acids with single-stranded nucleic acids, oligonucleotides, mononucleotides, salts and/or other such impurities. The invention also relates to a method for chromatographically isolating and/or purifying same, and to a kit for this purpose.

Abstract: An ultrathin-layer chromatography plate including a stationary phase comprising electrospun nanofibers wherein at least about 50% of the nanofibers are oriented within 20° of a direction of alignment, and wherein the stationary phase has a thickness from about 10 ?m to about 30 ?m.

Abstract: Stackable planar adsorption devices include a plurality of layers of adsorptive media provided in a web format. The layers are stacked in contiguous fashion, sealed and include fluid passageways to provide a range of scalable chromatography devices suitable for large scale manufacturing applications.

Abstract: In an embodiment, a method for manufacturing a thin layer chromatography (“TLC”) plate is disclosed. The method includes forming a layer of elongated nanostructures (e.g., carbon nanotubes), priming the elongated nanostructures with one or more adhesion priming layers, and at least partially coating the elongated nanostructures with a coating. The coating includes a stationary phase and/or precursor of a stationary phase for use in chromatography. The stationary phase may be functionalized with hydroxyl groups by exposure to a base or acid. The stationary phase may further be treated with a silane (e.g., an amino silane) to improve the performance of the TLC plate. Embodiments for TLC plates and related methods are also disclosed.

Abstract: Novel chromatographic materials for chromatographic separations, columns, kits, and methods for preparation and separations with a superficially porous material comprising a substantially nonporous core and one or more layers of a porous shell material surrounding the core. The material of the invention is comprised of superficially porous particles and a narrow particle size distrution.

Abstract: The present invention concerns a fluid distributor in a multistage column, each plate P of the column being divided into a certain number of panels Pa, and each panel Pa being equipped with a distributor of the invention, said distributor comprising: a) a solid jet breaker located substantially in the axis of the outlet opening of the collecting baffle of the panel Pa; b) an intermediate perforated plate extending laterally beyond the jet breaker, with a degree of opening in the range 10% to 40%; c) a distribution plate extending over the entire panel Pa, and with a degree of opening in the range 5% to 20%.

Abstract: Embodiments in accordance with the present invention relate to packed-column nano-liquid chromatography (nano-LC) systems integrated on-chip, and methods for producing and using same. The microfabricated chip includes a column, flits/filters, an injector, and a detector, fabricated in a process compatible with those conventionally utilized to form integrated circuits. The column can be packed with supports for various different stationary phases to allow performance of different forms of nano-LC, including but not limited to reversed-phase, normal-phase, adsorption, size-exclusion, affinity, and ion chromatography. A cross-channel injector injects a nanolitre/picolitre-volume sample plug at the column inlet. An electrochemical/conductivity sensor integrated at the column outlet measures separation signals.

Abstract: Novel particles and materials for chromatographic separations, processes for preparation and separations devices containing the chromatographic particles and materials are provided by the instant invention. In particular, the invention provides a porous inorganic/organic hybrid particle, wherein the inorganic portion of the hybrid particle is present in an amount ranging from about 0 molar % to not more than about 49 molar %, wherein the pores of the particle are substantially disordered. The invention also provides a porous inorganic/organic hybrid particle, wherein the inorganic portion of the hybrid particle is present in an amount ranging from about 25 molar % to not more than about 50 molar %, wherein the pores of the particle are substantially disordered and wherein the particle has a chromatographically enhancing pore geometry (CEPG). Methods for producing the hybrid particles, separations devices comprising the hybrid particles and kits are also provided.

Abstract: The invention relates to an apparatus for the chromatographic separation of a substance mixture in liquid form, comprising a stationary phase, wherein the stationary phase is configured in particular as a plate or plate-shaped body, consisting in particular of a porous solid, characterised in that the apparatus comprises at least one feed device for feeding a substance mixture, wherein the feed device comprises a plurality of feed openings and a plurality of feed lines and the feed openings are in particular disposed in one plane so that the length of the feed lines from a collecting feed line to at least a part of the plurality of feed openings is substantially the same.

Abstract: The present invention provides novel chromatographic materials, e.g., for chromatographic separations, processes for their preparation and separations devices containing the chromatographic materials. The preparation of the inorganic/organic hybrid materials of the invention wherein a surrounding material is condensed on a porous hybrid core material will allow for families of different hybrid packing materials to be prepared from a single core hybrid material. Differences in hydrophobicity, ion-exchange capacity, surface charge or silanol activity of the surrounding material may be used for unique chromatographic separations of small molecules, carbohydrates, antibodies, whole proteins, peptides, and/or DNA.

Abstract: In an embodiment, a method for manufacturing a thin layer chromatography (“TLC”) plate is disclosed. The method includes forming a layer of elongated nanostructures (e.g., carbon nanotubes), and at least partially coating the elongated nanostructures with a coating. The coating includes a stationary phase and/or precursor of a stationary phase for use in chromatography. The stationary phase may be functionalized with hydroxyl groups by exposure to acidified water vapor or immersion in a concentrated acid bath (e.g., HCl and methanol). At least a portion of the elongated nanostructures may be removed after being coated. Embodiments for TLC plates and related methods are also disclosed.

Abstract: In an embodiment, a method for manufacturing a thin layer chromatography (“TLC”) plate is disclosed. The method includes forming a layer of elongated nanostructures (e.g., carbon nanotubes), and at least partially coating the elongated nanostructures with a coating. The coating includes a stationary phase and/or precursor of a stationary phase for use in chromatography. At least a portion of the elongated nanostructures may be removed after being coated. Embodiments for TLC plates and related methods are also disclosed.

Abstract: A countercurrent chromatography apparatus includes a plurality of plates, at least one plate (16) having first and second interleaved spiral flow channels (52, 54, 56, 58) therein. Each spiral flow channels (52, 54, 56, 58) has a first end (I1, I2, I3, I4) near the central axis and a second ends (O1, O2, O3, O4) near the periphery. The outlet of the first channel (O1) is connected to the inlet of the second channel (I2) by a connecting channel (72). Septa may be provided between the plates to connect the spiral channels of one plate to the spiral channels of the next plate.

Abstract: In an embodiment, a method for manufacturing a thin layer chromatography (“TLC”) plate is disclosed. The method includes forming a layer of elongated nanostructures (e.g., carbon nanotubes), and at least partially coating the elongated nanostructures with a coating. The coating includes a stationary phase and/or precursor of a stationary phase for use in chromatography. Embodiments for TLC plates and related methods are also disclosed.

Abstract: Embodiments of the present invention are directed to porous materials for use in solid phase extractions and chromatography. The materials feature at least one hydrophobic component, at least one hydrophilic component and at least one ion-exchange functional group. The materials exhibit superior wetting and ion-exchange performance.

Abstract: Disclosed is a method for producing botanical oil with no by-produced trans fatty acids comprising the steps of; (1) introducing a raw oil obtained by squeezing plant seeds into a column having activated carbon filled therein from the upper part of the column; (2) allowing the oil to transfer in the column by the action of gravity toward the lower part of the column and allowing the oil to discharge from the column through a filter cloth placed adjacent to the bottom part of the activated carbon layer, wherein the filter cloth has a pore size of 13 to 45 ?m, and (3) introducing the oil discharged from the column into an activated carbon separation device comprising a filter having a pore size of 3-7 ?m, and discharging from said separation device an oil having no activated carbon microparticles by the action of a sucking force.

Abstract: Disclosed is a method for producing botanical oil with no by-produced trans fatty acids comprising the steps of; (1) introducing a raw oil obtained by squeezing plant seeds into a column having activated carbon filled therein from the upper part of the column; (2) allowing the oil to transfer in the column by the action of gravity toward the lower part of the column and allowing the oil to discharge from the column through a filter cloth placed adjacent to the bottom part of the activated carbon layer, wherein the filter cloth has a pore size of 13 to 45 ?m; and (3) introducing the oil discharged from the column into an activated carbon separation device comprising a filter having a pore size of 3-7 ?m, and discharging from said separation device an oil having no activated carbon microparticles by the action of a sucking force.

Abstract: The preparative column has an inner thin wall HPLC compatible material tube, packed with absorbent particles, with filters and end fittings of HPLC compatible material at the tube ends. An aluminum outer sleeve tightly overlies and reinforces the inner tube, aluminum end caps overlie the end fittings and are secured to the outer sleeve. End connections in the end fittings allow solvent and sample flow through the packed absorbent. Exterior axial flats on the aluminum sleeve and end caps provide broad contact against flat thermal surfaces of conventional temperature controllers, thereby yielding effective thermal transfer there between. The flats further minimize column rolling on flat level surfaces and provide favorable locations for connection taps for conveying coolant flow through passages formed in the sleeve.

Abstract: The present invention concerns a fluid distributor in a multistage column, each plate P of the column being divided into a certain number of panels Pa, and each panel Pa being equipped with a distributor of the invention, said distributor comprising: a) a solid jet breaker located substantially in the axis of the outlet opening of the collecting baffle of the panel Pa; b) an intermediate perforated plate extending laterally beyond the jet breaker, with a degree of opening in the range 10% to 40%; c) a distribution plate extending over the entire panel Pa, and with a degree of opening in the range 5% to 20%.

Abstract: A chromatographic apparatus is provided comprising a housing, a fluid inlet to the housing, a fluid outlet from the housing, an optional vent and a chromatographic packed bed in the housing. The fluid inlet and fluid outlet and optional vent are provided with connectors that connect a fluid inlet and a fluid outlet on other such chromatographic apparatus.

Abstract: A fluidic chip device adapted for processing a fluidic sample, the fluidic chip device comprising a substrate comprising a fluidic conduit for conducting the fluidic sample under pressure, and two reinforcing structures between which the substrate is arranged, wherein the two reinforcing structures are connected to one another to reinforce pressure resistance of the substrate.

Abstract: A device for sample analysis includes a microfluidic device for separating analytes of a sample comprising a liquid, the microfluidic device comprising a substrate having a first surface and a second surface opposite the first surface, the substrate defining features that collectively occupy an area of the substrate of about 0.1 to 10 cm2, the features comprising a sample input port located at the first surface; a drying agent input port located at the first surface; an enrichment column; a separation column; switching ports located at the second surface; and fluid-conducting passages extending through the substrate from the switching ports to the sample input port, the drying agent input port, the enrichment column and the separation column. Also provided are methods and systems for separating analytes from a sample.

Abstract: The present invention contemplates various devices that are configured to separate a sample, which contains more than one unique species, into any desired number of sub-samples by passing the sample across a like number of separation media configured for a first separation protocol. Each of the sub-samples may be further separated by an additional separation protocol, thereby creating a plurality of mini-samples, each of which may be further separated and/or analyzed. The invention also contemplates using a simple method of using conduits to form a fluid path that passes through a plurality of separation media, each of which media is configured to isolate a particular sub-sample. After various sub-samples of the sample are isolated by the various separation media, the conduits may be removed, thereby enabling each of the isolated sub-samples to be further separated and/or analyzed independent of any other sub-sample.

Abstract: It is an object of the present invention to provide a method capable of easily identifying a coloring material composition. The method performs a chromatography step of loading a subject sample containing the coloring material composition to a chromatography apparatus that holds a separating base material containing a cellulosic material and a metallic oxide material, and of performing a chromatography using a mobile phase of a liquid in the analysis of the coloring material composition. According to such a chromatography apparatus, coloring materials contained in the coloring material composition can be favorably and easily separated.

Abstract: Disclosed is a method for producing botanical oil with no by-produced trans fatty acids comprising the steps of; (1) introducing a raw oil obtained by squeezing plant seeds into a column having activated carbon filled therein from the upper part of the column; (2) allowing the oil to transfer in the column by the action of gravity toward the lower part of the column and allowing the oil to discharge from the column through a filter cloth placed adjacent to the bottom part of the activated carbon layer, wherein the filter cloth has a pore size of 13 to 45 ?m; and (3) introducing the oil discharged from the column into an activated carbon separation device comprising a filter having a pore size of 3-7 ?m, and discharging from said separation device an oil having no activated carbon microparticles by the action of a sucking force.

Abstract: In a liquid chromatographic system, removing at least part of a volatile component from the liquid sample stream after separation by flowing it through a volatile component-removal device including a porous wall having a surface coating of a permeable polymer less than 10 ?m thick. A liquid chromatographic system suitable for performing the method. Also, a liquid chromatographic system in which volatile component is removed prior to separation across the same type of membrane or across a membrane made of a copolymer of perfluoro-2,2-dimethyl-1,3-dioxole.

Abstract: A multi-column liquid chromatography system (10) for performing a plurality of liquid chromatography separations in parallel is based on a column plate structure (12) having parallel grooves (20) formed in a surface (22) of a plate (18), a cover sheet (40) bonded to the surface (22) to cover the grooves (20) and a stationary phase (38) contained in each covered groove (20). Through holes (24, 26) in the plate (18) define respective inlets (24) for the chromatography columns (14) and flow cells (16) at outlets, with the cover sheet (40) providing an optically transparent end wall for the flow cells (16) and another cover sheet (42) bonded to the opposite surface (30) of the plate (18) providing the other optically transparent end wall for the flow cells (16). Thus merely three parts need be provided for a structure for providing the chromatography columns, that is, a plate having grooves and through holes plus two cover sheets.