Patents for G01N 30 - Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography (41,194) |
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09/15/1981 | US4289620 High pressure glass column for high performance liquid chromatography |
09/15/1981 | US4289029 High temperature injection and vaporization system for gas chromatography |
09/08/1981 | US4288322 Sample/standard injection head for fluid-phase chromatograph |
09/08/1981 | US4287752 Adsorption by copper on silica gel |
09/08/1981 | CA1108517A1 Analytical method for determining acid/salt and base/salt species concentration in solution |
09/01/1981 | US4286873 Refractometer cell with integral lens |
09/01/1981 | US4286457 Viscosity measurement |
09/01/1981 | US4286456 Gas chromatographic chamber |
08/26/1981 | EP0034337A2 A process for the optical resolution of a racemic mixture |
08/25/1981 | US4285698 Analysis of aflatoxins in peanuts by high pressure liquid chromatograph |
08/18/1981 | US4284352 Heat exchanger for refractometer |
08/18/1981 | US4283945 Volume measuring apparatus |
08/11/1981 | US4283370 And eluting with a mineral acid |
08/11/1981 | US4283280 Cartridge type separation column and holder assembly for liquid chromatographs |
08/11/1981 | US4283201 Titration |
08/11/1981 | US4283199 Chromatography |
08/11/1981 | US4283140 Spatially homogenizing optical modulator |
08/11/1981 | CA1106768A1 Apparatus for separating fluids |
08/05/1981 | EP0033188A1 Electrochemical detection system |
08/05/1981 | EP0033012A2 A device for the automatisation of at least one operation in an injector for gas chromatographic columns |
08/04/1981 | US4281687 Fluid storage device |
08/04/1981 | US4281679 Flow control means for use in an adaptor assembly |
08/04/1981 | US4281618 Apparatus for transferring sample on flexible sheet to chromatographic plate |
07/29/1981 | EP0032770A2 Apparatus for chromatographic ion analysis and method of chromatographic ion analysis |
07/29/1981 | EP0032560A1 Direct on-column injector and injection method |
07/28/1981 | US4280925 Ion exchanging with zinc sulfide |
07/28/1981 | US4280905 Chromatography column |
07/28/1981 | US4280823 Method and apparatus for sonic separation and analysis of components of a fluid mixture |
07/22/1981 | EP0032190A2 Apparatus for measuring radiation emitted by a sample |
07/21/1981 | US4279509 Zero volume flow cell |
07/07/1981 | US4277251 Absorption on silica gel |
07/07/1981 | US4277017 Gear drive for seal-less counter current chromatography |
07/07/1981 | US4276913 Method and apparatus for fluid sample injection for fluid chromatography |
07/07/1981 | US4276907 Fluid actuated valve |
06/30/1981 | US4276475 Novel photometric system |
06/30/1981 | US4276060 Chromatographic hydrogen isotope separation |
06/30/1981 | CA1104043A1 Personal monitoring device or dosimeter, for measuring exposure of personnel to organic vapors |
06/25/1981 | WO1981001746A1 Chromatographic sheet of layer for pressurized layer chromatographic apparatus |
06/23/1981 | US4274967 Chromatographic apparatus and method |
06/23/1981 | US4274480 Gas chromatograph sample conditioner |
06/16/1981 | US4273867 Method and reagent for counteracting lipemic interference |
06/16/1981 | US4273653 Microchromatographic system for medicament intake control |
06/16/1981 | US4273559 Alkali flame ionization detector |
06/16/1981 | CA1103135A1 Method to determine a diagnostic indicator of blood sugar condition and a liquid chromatographic microcolumn therefor |
06/10/1981 | EP0029936A1 Method and device for the long-term control of gaseous pollutant emissions or influences, as well as of the moisture content of gases, especially in the air |
06/09/1981 | US4272483 Solution handling apparatus and method |
06/09/1981 | US4272381 Thin-layer chromatography spotting |
06/09/1981 | US4272380 For thin layer chromatography, lipophilic dye containing disk |
06/09/1981 | US4272246 Method and apparatus for chromatographic quantitative analysis |
06/09/1981 | US4271703 High temperature sampling system for liquid chromatography |
06/09/1981 | US4271697 Chromatographic analysis |
06/09/1981 | US4271695 Apparatus for feeding carrier gas to on-column injectors |
06/03/1981 | EP0029457A1 Ultrasensitive enzymatic radioimmunoassay method |
06/02/1981 | US4271022 Detection unit with solute detector and transport system |
06/02/1981 | US4271021 Treating polyacrylic acid with an acid |
06/02/1981 | US4270925 Method and apparatus for automatically determining chlorine and chlorine dioxide concentrations |
06/02/1981 | US4270921 Microchromatographic device and method for rapid determination of a desired substance |
05/26/1981 | US4269710 Chromatographic apparatus |
05/26/1981 | US4269608 Cooling the liquid sample by heat exchanging along the initial length of the apparatus to achieve trapping and prevent early vaporization |
05/26/1981 | CA1101828A1 Composition for chromatography |
05/26/1981 | CA1101827A1 Bimodal chromatographic resolving zone |
05/26/1981 | CA1101785A1 Radial compression of packed beds |
05/19/1981 | US4268269 Field test method for estimation of concentration of organic materials in water |
05/19/1981 | US4268268 Method and apparatus for characterization of cells, particles, and liquids |
05/14/1981 | WO1981001245A1 Methods to determine a diagnostic indicator of blood sugar conditions,and,liquid chromatographic columns therefor(cyanide free) |
05/13/1981 | EP0028408A1 High temperature injection and vaporization system for gas chromatography |
05/13/1981 | EP0028319A1 Method and apparatus for effecting a repeated chemical analysis of a process stream |
05/12/1981 | US4267056 For chromatographic analysis |
05/12/1981 | US4267054 Method for the chromatographic separation of soluble components in feed solution |
05/05/1981 | US4266277 Chromatographic analysis of gaseous matter |
05/05/1981 | US4266196 Gas detecting means utilizing electric discharge |
05/05/1981 | US4265634 Chromatographic separation and quantitative analysis of ionic species |
05/05/1981 | US4265536 Electrical zeroing of light beam |
04/29/1981 | EP0027601A2 Dosing device for gas chromatography |
04/28/1981 | US4264817 Coaxial electron capture detector with thermionic emission electron source |
04/28/1981 | US4264327 Method and apparatus for automatic competitive binding analysis |
04/21/1981 | US4263144 Device for collecting and transferring particulate material |
04/21/1981 | US4262520 Heating, inert gas vaporization of lower boiling hydrocarbons |
04/14/1981 | US4262253 Constant alternating current conductivity detector for a chromatograph |
04/14/1981 | US4261835 Thin layer and paper chromatography cones |
04/14/1981 | CA1099441A1 Polysiloxane packed gas chromatographic columns |
04/07/1981 | US4260680 Method and apparatus for the measurement of glucose content |
04/02/1981 | WO1981000913A1 Microchromatographic device and method for rapid determination of a desired substance |
03/31/1981 | US4259572 Ionization of organic substances on conveyor means in mass spectrometer |
03/31/1981 | US4259186 Gel filtration column |
03/31/1981 | US4259079 Method and apparatus for electrical separation of molecules |
03/31/1981 | US4258698 Solar heating apparatus |
03/31/1981 | US4258564 Polymer characterization apparatus |
03/25/1981 | EP0025639A1 Process for preparing porous cellulose spherical particles |
03/24/1981 | US4258000 Poromeric matrix containing dissolved indicator |
03/24/1981 | US4257884 Chromatography |
03/24/1981 | US4257776 By chromatographic separation using a polyamide coated plate over which linoleic acid is deposited and heated to produce a color change |
03/24/1981 | US4257772 Method and apparatus for chemical analysis of specimens |
03/24/1981 | US4257259 Continuous analysis of beverages |
03/17/1981 | US4256843 A hydrolyzed porous spherical gel a homopolymer of pentaerythritol dimethacrylate or a copolymer with a methacrylate; high speed chromatography |
03/17/1981 | US4256842 Hydrophilic separating carrier and preparation thereof |
03/17/1981 | CA1097519A1 Method of removing headspace volatiles and analysis thereof |
03/11/1981 | EP0024566A1 An apparatus for the analysis of oxygen, nitrogen and hydrogen contained in metals |
03/10/1981 | US4254656 Chromatographic analysis without calibration using dual detectors |
03/10/1981 | US4254654 Modulated fluid detector |