| Patents for G01N 31 - Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroups; Apparatus specially adapted for such methods (18,554) |
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| 06/28/1988 | US4753891 Schiff test for rapid detection of low levels of aldehydes |
| 06/28/1988 | US4753890 Complexing with substituted 1,5-bis(2-hydroxyphenyl)-3-cyanoformazans; buffered; color change detection |
| 06/28/1988 | US4753888 Multiple control standard for blood analysis |
| 06/22/1988 | EP0272043A2 Diagnostic device |
| 06/22/1988 | EP0271854A2 Test strip for the analytical determination of body fluid constituents |
| 06/22/1988 | CN87107352A Method for measuring ion density and like, graduated piece and graduation of measurer used therein |
| 06/21/1988 | US4752447 Dye or basic or acid color former, complementary acid or basic compound |
| 06/16/1988 | WO1988004427A1 Developing system and a method of using the developing system for detection of carboxylic acids |
| 06/16/1988 | WO1988004234A1 Laminate having indicator function |
| 06/15/1988 | EP0271102A2 Method for measuring the ion-concentration and the like, a calibrating sheet and a calibrating method for the measuring device used therefor |
| 06/15/1988 | EP0270595A1 An optically active reagent and a method for the determination of enantiomeric amine compounds. |
| 06/08/1988 | EP0269979A2 Analytical element for measuring alkaline phosphatase |
| 06/08/1988 | EP0269834A2 Method and device for the continuous colorimetric determination of the concentration of cyanide in aqueous solutions |
| 06/08/1988 | EP0134798B1 A preservative composition for addition to a milk sample for compositional testing, and a method of screening milk samples employing it |
| 06/07/1988 | US4749657 Organic spill monitor |
| 06/07/1988 | US4749552 Automatic titration analysis apparatus |
| 06/07/1988 | CA1237771A1 Sensor array for toxic gas detection |
| 06/01/1988 | EP0269511A2 Method and apparatus for determining the amounts of at least two elements, chosen from carbon, hydrogen, sulphur and nitrogen, in at least two fractions of a sample of organic material |
| 06/01/1988 | EP0269139A1 Method of preparing a substrate to be used for detection purposes and device for detecting certain air constituents |
| 06/01/1988 | DE3640114A1 Device for demonstrating the efficacy of a disinfection process when disinfectants are used in a washing process |
| 06/01/1988 | DE3639606A1 Process for the preparation of a dye-containing polymer |
| 06/01/1988 | CN86103977A Horizontal convective distilling apparatus for determination of boron and method for its distillation and separation |
| 05/31/1988 | US4748126 Pyridine-free Karl-Fischer reagent and a process for the determination of water therewith |
| 05/25/1988 | EP0268237A2 Apparatus and process for reagent fluid dispensing and printing |
| 05/25/1988 | EP0268167A2 Analytical element for determination of hydrogen peroxide and analytical method using the same |
| 05/24/1988 | US4746616 Method of treating a consumable product and packaging for consumable products to indicate the presence of contamination |
| 05/18/1988 | EP0267519A2 Test strip for the analytical determination of a component in a body fluid |
| 05/17/1988 | US4744952 Berberine sulfate and a pigment |
| 05/17/1988 | CA1236790A1 Catalytic hydrodesulphurization of a hydrocarbon oil fraction and method and apparatus for sulphur content determination |
| 05/11/1988 | EP0266736A2 Method and device for mineralization of carbonaceous materials |
| 05/10/1988 | US4743238 Addition polymers, fatty acid, water soluble wax monosteard, plasticizer, and hydrogenated castor oil |
| 05/04/1988 | EP0266334A2 Method and apparatus for carrying out catalyzed chemical reactions and for studying catalysis |
| 05/04/1988 | EP0265686A2 Test agents and indicators for the detection of thiol groups and processes for their preparation |
| 05/04/1988 | EP0265513A1 Method and apparatus for measuring cyanide. |
| 05/03/1988 | US4742010 Without deproteinization |
| 05/03/1988 | US4741815 By electrochemical impulse, high sensitivity |
| 04/26/1988 | US4740475 Integral substance detection device and method |
| 04/26/1988 | US4740474 Reaction with sulfur dioxide which compound reacts with amine to give aerosol |
| 04/26/1988 | US4740473 Sodium sulfide analyzer |
| 04/26/1988 | US4740471 Karl Fischer titration agent and method |
| 04/26/1988 | US4739881 Quick open syringe |
| 04/21/1988 | WO1988002856A1 System and method for thermogravimetric analysis |
| 04/20/1988 | EP0264252A2 Process and test kit for the detection of explosives |
| 04/20/1988 | EP0263875A1 Multiple control standard for blood analysis. |
| 04/19/1988 | US4738823 Test strip with adjustable sample absorption capacity |
| 04/13/1988 | EP0263692A2 Gas sensor |
| 04/13/1988 | CN87207138U Long-effect ph measure memberane, block, plate |
| 04/12/1988 | US4737463 Photoactivatable time-temperature indicator |
| 04/12/1988 | US4737458 Stability |
| 04/12/1988 | US4737457 Forming dye detectable at long wavelength |
| 04/06/1988 | EP0262445A1 Multilayer testing device |
| 04/05/1988 | US4735778 Light-transmitting, antistatic resin |
| 04/05/1988 | US4735745 Defrost indicator |
| 03/29/1988 | US4734360 Human body fluids; alcohol oxidase, mannitol, buffer and peroxidase substance |
| 03/22/1988 | US4732861 Precipitation and combustion of oils |
| 03/22/1988 | US4732849 Multilayered chemical analysis material for analysis of aqueous liquids |
| 03/22/1988 | US4732153 Diagnostic test |
| 03/16/1988 | EP0259797A2 Device for evaluation of test strips |
| 03/15/1988 | US4731333 Method for detecting gaseous hydrides |
| 03/15/1988 | US4731332 Method and test kit for determining the amount of polar substances in fat |
| 03/15/1988 | US4731331 Rate method for the determination of inorganic phosphorus |
| 03/15/1988 | CA1234038A1 Method for the colorimetric determination of polycarboxylates and sulfonates in aqueous systems |
| 03/10/1988 | WO1988001746A1 Enhanced luminescent assay |
| 03/02/1988 | EP0258035A2 Analytical element and method for theophylline determination having increased alkaline phosphatase isoenzyme |
| 03/02/1988 | EP0258034A2 Analytical element and method for theophylline determination using buffer in spreading zone |
| 03/02/1988 | EP0257916A1 Indicator device |
| 03/01/1988 | US4728499 Carbon dioxide indicator device |
| 02/25/1988 | WO1988001384A1 Indicator device |
| 02/25/1988 | WO1988001299A1 Method and apparatus for detecting gaseous compounds |
| 02/24/1988 | EP0256684A2 Method and apparatus for measuring dissolved organic carbon in water |
| 02/24/1988 | EP0256562A2 Dry-type multilayer analytical element |
| 02/24/1988 | CN87105619A 指示器装置 Indicator device |
| 02/16/1988 | US4725552 Karl Fischer reagent and its use |
| 02/10/1988 | EP0255708A2 Indicator composition and method for the preparation thereof |
| 02/10/1988 | EP0255679A2 Composition and method using substituted ortho-quinones as electron transfer agents in analytical determinations |
| 02/10/1988 | EP0255675A2 Single test strip delivering system |
| 02/03/1988 | EP0255229A2 Steam sterilisation test pack |
| 02/03/1988 | EP0255089A2 Cobalt containing reagents and methods for the determination of analytes in aqueous fluids |
| 02/03/1988 | EP0255087A2 Cobalt(III) reagents in combination with water soluble polymers |
| 02/03/1988 | EP0255086A2 Methods for minimizing interference by reductants in biological fluids |
| 02/03/1988 | EP0255077A2 Device for detecting the position of the test area of a test strip and for turning it |
| 02/03/1988 | EP0255057A2 Test strip impregnating device |
| 02/03/1988 | EP0254839A1 Indicator-tube for combustible gases |
| 02/03/1988 | EP0254780A1 Colorimetric detection of an alcohol in a hydrocarbon |
| 02/03/1988 | CN85105297B Instrument for measuring ammonia concentration |
| 01/27/1988 | EP0254457A1 Analytical element having spread control zone |
| 01/27/1988 | EP0253997A1 Test tube with several reagent layers |
| 01/27/1988 | CN86104744A Determination of zinc content in circulating solution of zinc chloride during an activated carbon process |
| 01/26/1988 | US4721670 Analytical reagent, analytical method, and multilayer chemical-analytical element |
| 01/26/1988 | US4721612 Steroidal liposomes |
| 01/20/1988 | CN87104078A Automatic titrator |
| 01/19/1988 | US4720464 Electrolytes for Karl Fischer coulometric titration |
| 01/19/1988 | US4720372 Device for the evaluation of a flat test carrier for the analytical determination of components of body fluids |
| 01/19/1988 | CA1231634A1 Method for the detection of bis (2- chloroethyl)sulfide or bis (2-chloroethyl)imine |
| 01/14/1988 | WO1988000339A1 Oxygen concentration probe |
| 01/13/1988 | CN87103819A Process for characterizing catalyst by determining activity of conversion and coking |
| 01/12/1988 | US4719086 Buret apparatus including a stopper containing a siphon passage |
| 01/12/1988 | US4719085 Mount for ammonia-sensitive test elements |
| 01/07/1988 | DE3718195A1 Vorrichtung zum automatischen titrieren von plutonium Apparatus for automatically titrate of plutonium |
| 01/06/1988 | CN87201750U Antomatic liquid adding chemical analysis filtering device |