The invention relates to a method for automated liquid-liquid extraction. The method comprises the steps of:
i) providing an extraction device,
ii) providing a vessel with a hydrophilic phase and a hydrophobic phase, wherein at least one component to be extracted is contained in one of the two phases,
iii) determining a conductivity difference ΔList between the hydrophilic phase and the hydrophobic phase using a conductivity sensor.
The invention relates to a method for automated liquid-liquid extraction. The method comprises the steps of:
i) providing an extraction device,
ii) providing a vessel with a hydrophilic phase and a hydrophobic phase, wherein at least one component to be extracted is contained in one of the two phases,
iii) determining a conductivity difference ΔList between the hydrophilic phase and the hydrophobic phase using a conductivity sensor.
The upper phase is extracted at at least two different speeds v1 to vn, wherein the last speed vn is slower than a previous speed vn−1, preferably slower than v1 to vn−1.
The invention relates to an oven (1, 1′) for an analytical system, in particular for a titration system and especially for a Karl Fischer titration system. The oven (1, 1′) comprises a housing, an insulation system (2a, 2a′, 2b, 2b′, 2c, 2c′) and an insert (3, 3′) for a sample vessel. The insulation system (2a, 2a′, 2b, 2b′, 2c, 2c′) is arranged at least partially around the insert (3, 3′). At least one heating element is arranged between the insulation system (2a, 2a′, 2b, 2b′, 2c, 2c′) and the insert (3, 3′) and at least partially surrounding the insert (3, 3′). The invention also relates to a titration system with such an oven (1, 1′) and a titration method.
G01N 31/16 - Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroupsApparatus specially adapted for such methods using titration
F27B 17/02 - Furnaces of a kind not covered by any of groups specially designed for laboratory use
G01N 35/00 - Automatic analysis not limited to methods or materials provided for in any single one of groups Handling materials therefor
H05B 3/62 - Heating elements specially adapted for furnaces
3.
METHOD FOR MODIFYING A POLYMER SUPPORT MATERIAL, POLYMER SUPPORT MATERIAL OBTAINABLE BY SUCH METHOD, CHROMATOGRAPHY COLUMN, METHOD OF CHROMATOGRAPHIC SEPARATION AND USE OF A POLYMER SUPPORT MATERIAL
A method for modifying a support material, in particular a polymeric support material, for use as a stationary phase in an analytical or preparative separation process. The method includes the steps of providing a support material, coating the support material with an oligoamine or polyamine and reacting the support material with a compound comprising a first functional group reactive with amines and/or hydroxy group and an ion-exchange group. Additionally a support material, a chromatography column, a method of chromatographic separation of analytes and the use of such support material.
B01D 15/36 - Selective adsorption, e.g. chromatography characterised by the separation mechanism involving ionic interaction, e.g. ion-exchange, ion-pair, ion-suppression or ion-exclusion
The invention relates to an ion exchange material for use as a stationary phase in an analytical or preparative separation process, in particular for the separation of anions, preferably halo acetic acids. The material comprises - a polymer support, - acid groups directly attached to a surface of the polymer support, the acid groups are selected from the group consisting of: sulfonic acid groups; carboxylic acid groups or combination thereof, - a polymer layer, covalently attached to the surface of the polymer support, the polymer layer comprises an anion exchange group. The amount of acid groups is in the range of 0.05 – 1.05 mmol/g of polymer support, preferably 0.1 – 0.9 mmol/g and particularly preferably 0.16 - 0.85 mmol/g. The acid groups and the anion exchange group are spatially separated, preferably through the polymer layer, by at least 10 nm, preferably by at least 50 nm and most preferably by at least 100nm. The invention relates also to a method for producing said ion exchange material, a chromatography column with said ion exchange material, a method of chromatographic separation of analytes and the use of said ion exchange material.
B01D 15/36 - Selective adsorption, e.g. chromatography characterised by the separation mechanism involving ionic interaction, e.g. ion-exchange, ion-pair, ion-suppression or ion-exclusion
B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
B01J 20/30 - Processes for preparing, regenerating or reactivating
The invention relates to an automatic liquid chromatography system (1) comprising at least one fluid handling unit (2) which is provided as a replaceable, modular component. The system (1) also comprises at least one expansion module support (3) comprising at least one, preferably frameless, component position (C, C', D, D', E) for receiving at least one fluid handling unit (2). The system also comprises a base plate (6) and/or a cover plate (4). The at least one expansion module support (3) comprises at least one mechanical connection element (15) and, when one plane is being used as intended, the at least one mechanical connection element (15) projects into an adjacent plane, wherein the planes are selected from: expansion module support (3), cover plate (4) and base plate (6).
The invention relates to an oven (1, 1') for an analysis system, in particular for a titration system, especially for a Karl Fischer titration system. The oven (1, 1') comprises a housing, an insulating system (2a, 2a', 2b, 2b', 2c, 2c'), and an insert (3, 3') for a sample vessel. The insulating system (2a, 2a', 2b, 2b', 2c, 2c') is at least partly arranged about the insert (3, 3'), and at least one heating element is arranged between the insulating system (2a, 2a', 2b, 2b', 2c, 2c') and the insert (3, 3') and so as to at least partly surround the insert (3, 3'). The invention also relates to a titration system comprising such an oven (1, 1') and to a titration method.
The invention relates to a method and a device for determining at least one analyte species in an analyte solution, preferably in n analyte solutions consecutively, a computer program comprising instructions related to the program and a computer readable medium having stored such computer program. The method involves a step of amperometric detection followed by cleaning the working electrode on-line by applying at least one cyclic electric potential to the working electrode.
G01N 27/48 - Systems using polarography, i.e. measuring changes in current under a slowly-varying voltage
G01N 27/49 - Systems involving the determination of the current at a single specific value, or small range of values, of applied voltage for producing selective measurement of one or more particular ionic species
9.
METHOD FOR MODIFYING A POLYMER SUPPORT MATERIAL, POLYMER SUPPORT MATERIAL OBTAINABLE BY SUCH METHOD, CHROMATOGRAPHY COLUMN, METHOD OF CHROMATOGRAPHIC SEPARATION AND USE OF A POLYMER SUPPORT MATERIAL
The present invention refers to a Method for modifying a support material, in particular a polymeric support material, for use as a stationary phase in an analytical or preparative separation process. The method comprises the steps of providing a support material, coating said support material with an oligoamine or polyamine and reacting the support material with a compound comprising a first functional group reactive with amines and/or hydroxy group and an ion-exchange group. The invention also refers to a support material, a chromatography column, a method of chromatographic separation of analytes and the use of such support material.
A method is disclosed for providing enhanced quantitative analysis of materials by a dual-laser Raman probe wherein the wavelengths of the lasers used to illuminate a target object are selected in a manner to improve and enhance the quantitative analysis performance of the Raman signals.
A method is disclosed for providing enhanced quantitative analysis of materials by a dual-laser Raman probe wherein the wavelengths of the lasers used to illuminate a target object are selected in a manner to improve and enhance the quantitative analysis performance of the Raman signals.
This invention relates to the field of spectroscopy and more particularly to a compact Raman spectroscopy system and method for providing enhanced quantitative analysis for process con-trol. The invention further relates to a Raman probe device for use in a Raman spectroscopy system. The method comprises the steps of : selecting a first excitation wavelength based on at least one characteristic of a target object; determining a range of a first Raman signal associated with said first excitation wavelength; determining a peak quantum efficiency value within the determined range of a quantum efficiency curve associated with said spectrometer; determining a Raman shifted peak of in-terest for the target object; and determining a second excita-tion wavelength based on the peak quantum efficiency value and the Raman shifted peak of interest.
The invention relates to a method and a device for determining at least one analyte species in an analyte solution, preferably in n analyte solutions consecutively, a computer program comprising instructions related to the program and a computer readable medium having stored such computer program. The method involves a step of amperometric detection followed by cleaning the working electrode on-line by applying at least one cyclic electric potential to the working electrode.
G01N 27/48 - Systems using polarography, i.e. measuring changes in current under a slowly-varying voltage
G01N 27/49 - Systems involving the determination of the current at a single specific value, or small range of values, of applied voltage for producing selective measurement of one or more particular ionic species
14.
Dialysis cell for sample preparation for a chemical analysis method
The invention relates to a dialysis cell for sample preparation for a chemical analysis method, in particular for ion chromatography. The dialysis cell comprises a donor channel and an acceptor channel extending parallel thereto. The donor channel and the acceptor channel are separated from each other by a selectively permeable dialysis membrane. In particular, an analyte that is dissolved in a donor solution in the donor channel can enter through the dialysis membrane into the acceptor solution in the acceptor channel. The acceptor channel has at least in some sections a volume that is smaller than the volume of the donor channel extending parallel thereto. Acceptor and donor channels are formed from half-cells, between which the dialysis membrane is arranged, wherein the donor channel and the acceptor channel are designed in each case as a recess in a contact surface of one of the half-cells with the dialysis membrane.
The invention relates to a reference interferometer (1) for determining an optical path length change, more particularly a relative optical path length change in interferometer arms (2), comprising a beam splitter (3) and a laser light source (4), wherein the beam splitter (3) is embodied in such a way that a light beam (5) of the laser light source (4) is guidable by means of total-internal reflection over a first side face, in particular an upper side (61), and a second side, in particular a lower side (62), of the beam splitter (3), characterized in that a prism (16') is disposed upstream of the beam splitter (3) in the beam path, said prism allowing the light beam (5) entering into the beam splitter (1) to be deflected, and/or characterized in that a prism (16") is disposed downstream of the beam splitter (3) in the beam path, said prism allowing the light beam (5') emerging from the beam splitter (3) to be deflected. Moreover, the invention relates to an interferometer, a spectrometer and a method for determining an optical wavelength change on the basis of the reference interferometer according to the invention.
The invention relates to a reference interferometer (1) for determining an optical path length change, in particular a relative optical path length change in interferometer arms (2), comprising a beamsplitter (3) and a laser light source (4), the beamsplitter (3) being designed in such a way that a light beam (5) of the laser light source (4) can be guided by a first side surface, in particular a top side (61), and a second side surface, in particular a bottom side (62), of the beamsplitter (3) by means of total internal reflection. The invention further relates to a use of a reference interferometer (1) of this type. Furthermore, the invention relates to a method for determining an optical path length change, in particular a relative optical path length change in interferometer arms (2), wherein a light beam (5), in particular a reference beam, is radiated from a laser light source (4) onto a beamsplitter (3), and the light beam (5) of the laser light source (4) is guided by a first side surface, in particular a top side (61), and a second side surface, in particular a bottom side (62), of the beamsplitter (3) by means of total internal reflection.
AA DD ) of the donor channel (2) extending parallel thereto. Acceptor and donor channels are formed from half-cells (6, 7), between which the dialysis membrane (4) is arranged, wherein the donor channel (2) and the acceptor channel (3) are designed in each case as a recess in a contact surface (8, 8') of one of the half-cells (6, 7) with the dialysis membrane (4).
09 - Scientific and electric apparatus and instruments
Goods & Services
Optical, weighing, measuring, signaling, checking
(supervision) apparatus and instruments; testing apparatus
not for medical use, including accessories thereof;
measuring apparatus, dosing apparatus; measuring and control
apparatus in the field of physical and chemical sciences,
including accessories thereof.
01 - Chemical and biological materials for industrial, scientific and agricultural use
09 - Scientific and electric apparatus and instruments
Goods & Services
Chemical products for use in analysis, calibration and other
industrial and scientific processes. Optical, weighing, measuring, signaling, checking
(supervision) apparatus and instruments; testing apparatus
not for medical use, including accessories thereof;
measuring apparatus, dosing apparatus; physical and chemical
control and measuring apparatus, including accessories
thereof.
01 - Chemical and biological materials for industrial, scientific and agricultural use
09 - Scientific and electric apparatus and instruments
Goods & Services
Chemical products for use in analysis, calibration and other industrial and scientific processes, namely, chemicals for use in industry and science Testing apparatus not for medical use, including accessories thereof, namely, apparatus for testing gas, liquids and solids, and for testing of physical and chemical parameters; dosing apparatus, namely, apparatus for dosing pre-determined dosages of chemical products
The invention relates to a closure (1) for a container, comprising a connecting element (2) for connection of the closure to a container, a sealing device (3) for sealing the access to a container content and an interface (4) to an adapter having a coupling receptacle (5). The closure (1) has a delivery position and a use position, the sealing device (3) being sealed in a gas- and liquid-tight manner in the delivery position. In a use position, the sealing device (3) is open.
A method for detecting analytes in flow rate analysis and chromatography is described, said method comprising the following steps: a) providing one or more light sources, an optical wave guide, a container containing a specimen with one or more analytes, and one or more detectors; b) exposing the container containing the specimen to light of one or various, defined wavelengths and/or wavelength ranges; and c) detecting the resulting light waves by means of one or more detectors after the specimen container has been exposed to light of one or various defined wavelengths and/or wavelength ranges, wherein the specimen is irradiated by transferring the light waves through an non-flexible or non-flexibly arranged optical wave guide before the light waves enter the specimen container. Said non-flexible or non-flexibly arranged optical wave guide is not susceptible to interference and permits selective irradiation with one or more wavelengths sequentially or simultaneously without requiring a great deal of time.
The invention relates to ion exchange materials comprising a hydrophobic support resin with grafted side chains that have a surfactant-type structure and encompass ion exchange groups. The ion exchange material can be obtained by radically grafting the side chains with the aid of a radical starter containing at least one peroxide group. The surfactant-type structure and the specific radical starter make it possible to obtain a regiospecific and particularly regular arrangement of the side chains on the support resin while allowing for excellent and uniform hydration of the ion exchange groups, resulting especially in improved signal asymmetries for bromide and nitrate.
B01J 47/00 - Ion-exchange processes in generalApparatus therefor
B01J 39/20 - Macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds
B01J 41/14 - Macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds
B01D 15/36 - Selective adsorption, e.g. chromatography characterised by the separation mechanism involving ionic interaction, e.g. ion-exchange, ion-pair, ion-suppression or ion-exclusion
25.
Volume measurement and/or metering device and method for operating a volume measurement and/or metering device
A volume measurement and/or metering device includes a cylinder/piston and cock system for sucking in and/or discharging liquids in a defined way, the piston being movable in relation to the cylinder for sucking in or discharging the liquid. The cylinder is mounted, together with the cylinder bottom, rotatably with respect to the cock system about an axis of rotation parallel to the cylinder longitudinal axis. The cylinder bottom bears with a sealing seat against a cock element of the cock system, the cock element having at least one duct orifice. These orifices are arranged in such a way that the at least one orifice in the cylinder bottom can be brought into congruence with the orifices of the cock element when the cylinder and the cylinder bottom are rotated. Further, the cock element is brought into a sealing closing position for simultaneously closing of all the orifices of the cylinder bottom are provided.
Sample changer with a balance, with at least two sample carriers which can be delivered to the balance and which are located in a sample rack, the sample carrier being made and arranged in the sample rack relative to the balance such that the sample carrier can be conveyed onto a weighing surface of the balance by rotation and/or shifting of the sample rack and/or the balance. Preferably, the balance is integrated in the sample changer.
09 - Scientific and electric apparatus and instruments
Goods & Services
spectral analysis software for controlling the spectral analysis instrument and for processing data obtained from samples by the instrument to analyze samples by spectral analysis, not used with, or to process, electrocardiograph data
