| 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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| 08/30/1989 | EP0330084A2 A method of testing waters |
| 08/29/1989 | US4861556 For rapid digestion |
| 08/24/1989 | WO1989007760A1 Curcumin in the detection and warning of cyanide adulterated food products |
| 08/23/1989 | EP0329331A2 Method of estimating a cumulative exposure to a component of a gas and apparatus therefor |
| 08/22/1989 | US4859608 Method and apparatus for titrimetric content determination in a chemical solution |
| 08/22/1989 | US4859607 Colorimetric detector for ozone and method of preparation |
| 08/22/1989 | US4859606 Method for detecting cations in a test sample utilizing chromogenic cryptahemispherands |
| 08/22/1989 | CA1258626A1 Test kit for determining the presence of organic materials and method of utilizing same |
| 08/17/1989 | DE3903126A1 Reagent composition and test strips for detecting constituents in body fluids |
| 08/17/1989 | DE3803173A1 Method for the continuous determination of mercury in liquids and reaction vessel for carrying out the method |
| 08/16/1989 | EP0328275A1 Assaying aluminium in drinking water |
| 08/16/1989 | EP0327952A1 Self-indicating and improved resolution analyses employing stoichiometric chemical subtraction |
| 08/16/1989 | EP0327918A1 Immunoassay element |
| 08/16/1989 | EP0327837A2 Method and apparatus for determining the fermentation of milk |
| 08/16/1989 | CN2042967U Portable determination instrument for detemining water content of sand |
| 08/15/1989 | US4857271 Using a quinone compound |
| 08/10/1989 | WO1989007266A1 Assaying aluminium in drinking water |
| 08/09/1989 | EP0326995A2 Method and apparatus for quantitative determination of trihalomethanes |
| 08/09/1989 | EP0326982A2 Method for the detection of chemical warfare agents |
| 08/08/1989 | US4855239 Test composition and device for the determination of cyanuric acid in water |
| 08/08/1989 | US4855228 Multiple oxidative indicator system for visual determination of hydrogen peroxide |
| 08/08/1989 | CA1258222A1 Test medium and method for detecting phosphorus segregates in metallic material |
| 08/02/1989 | EP0326494A1 Apparatus for measuring the calorific power carried by a flow of combustible matter |
| 08/02/1989 | EP0326407A2 Method for preparing aqueous analytical reagents containing water insoluble antioxidant |
| 08/01/1989 | US4853186 Water-compatible reducible compounds and their use in analytical compositions and methods |
| 07/26/1989 | EP0325389A2 Novel tetra-substituted aryl cyclic formazan dyes |
| 07/25/1989 | US4852025 System for determining the concentration of components of body fluids |
| 07/25/1989 | US4851353 Method and test composition for determination of lipid peroxide |
| 07/25/1989 | US4851352 Solvent composition for the determination of water by the Karl Fischer method |
| 07/25/1989 | US4850716 Remotely detectable sterilization monitor |
| 07/25/1989 | CA1257830A1 Test medium and method for detecting phosphorus segregates in metallic material |
| 07/19/1989 | EP0324093A2 Oil and fat release method |
| 07/18/1989 | US4849362 Fluorescent intracellular calcium indicators |
| 07/13/1989 | WO1989006355A1 Systems for determining cyanuric acid in water |
| 07/12/1989 | EP0323658A2 Method for determining the wobbe number of a gas mixture |
| 07/11/1989 | US4847066 Colorimetric indicators |
| 07/11/1989 | US4846292 Apparatus for automatically measuring ignition loss |
| 07/11/1989 | CA1257185A1 Gas decomposition detector for gas-insulated electrical apparatus |
| 07/05/1989 | EP0322882A2 Integral multilayer analytical element |
| 07/05/1989 | EP0322631A1 Method and reagent for the determination of peracids |
| 07/04/1989 | US4845040 Method and apparatus for analyzing different sulphur forms |
| 07/04/1989 | US4844867 Colorimetric detector |
| 06/29/1989 | DE3900611A1 Method of determining the proportion of combustible organic contaminants in sediments and soils |
| 06/27/1989 | US4843016 For nitrogen compounds |
| 06/27/1989 | US4843015 Method for determining volatile phosphorus in carbon |
| 06/27/1989 | US4842825 With fused quartz contact surfaces;pyrolytic analysis |
| 06/27/1989 | CA1256361A1 Measuring sulphide scavenger content of drilling fluid |
| 06/21/1989 | EP0321145A2 Immunodiagnostic device |
| 06/20/1989 | US4840919 Gas dosimeter for colorimetrically indicating the presence of amides |
| 06/20/1989 | US4840913 Oxides of nitrogen detector |
| 06/20/1989 | CA1256006A1 Procedure for the detection of allergen-containing housedust |
| 06/14/1989 | EP0319863A2 Homogeneous aqueous solution electrolyte test |
| 06/13/1989 | US4839297 Test carrier and method for the analytical determination of a component of a body fluid |
| 06/13/1989 | US4839296 Treating hydrophobic polytetrafluoroethylene semipermeable membrane with surfactant to make membrane hydrophilic |
| 06/13/1989 | US4839278 Clinical tests for bodily fluids |
| 06/07/1989 | EP0318777A2 Test carrier for the analysis of a fluid sample, and method for its preparation |
| 06/07/1989 | EP0318559A1 Analysis of carbohydrates |
| 06/07/1989 | CN1033321A Detecting tube for simple and rapid analysis of harmful metal-copper in water |
| 06/07/1989 | CN1033320A Detecting tube for simple and rapid analysis of harmful metal-lead in water |
| 06/06/1989 | US4837374 Microreactor for analyzing thin solid samples |
| 06/06/1989 | US4837373 Impregnated matrices on firm support separated by adhesive strips covered with film |
| 06/06/1989 | US4837331 Stabilization of tetrazolium salts with cyclodextrins |
| 06/06/1989 | US4837158 Process for characterizing a catalyst by determination of its conversion and coking activities |
| 06/06/1989 | US4837043 Impregnation of absorbent material |
| 06/06/1989 | CA1255215A1 Method and device for producing varying concentration patterns of chemically or biologically active substances |
| 06/06/1989 | CA1255212A1 Procedure for the detection of allergen-containing housedust |
| 06/06/1989 | CA1255198A1 Viability test device |
| 06/06/1989 | CA1255196A1 Test device and a method for the detection of a component of a liquid sample |
| 05/31/1989 | EP0318014A2 Reflection plate for a biochemical measuring instrument |
| 05/30/1989 | US4834234 Container for test strips |
| 05/30/1989 | US4834017 Time-temperature integrating indicator for monitoring the cooking process of packaged meats in the temperature range of 85-100 degrees celcius |
| 05/23/1989 | US4833087 Multicompartment, absorbers |
| 05/23/1989 | US4832914 Lamination, capillaries |
| 05/17/1989 | EP0316260A2 Method for the analytical determination of the content of chlorinated hydrocarbons |
| 05/17/1989 | CN1032981A Additive for measuring carbon and sulphur contents in steel and iron |
| 05/16/1989 | CA1254120A1 Procedure for the detection of allergen-containing housedust |
| 05/10/1989 | EP0315449A2 A method for determining volatile phosphorus in carbon |
| 05/09/1989 | US4829007 Process for detecting a plateable metal in an aqueous fluid |
| 05/05/1989 | WO1989003992A1 Devices and methods for chemical testing |
| 05/03/1989 | EP0314499A1 Devices and methods for chemical testing |
| 05/03/1989 | EP0313858A2 Analytical element |
| 05/03/1989 | EP0313655A1 Oxygen concentration probe |
| 05/03/1989 | DE3830623A1 Method for the determination of the total organic carbon content in water |
| 05/02/1989 | US4827014 2-Hydroxy-3-aminopropionic-n,n-diacetic acid and derivatives thereof, preparation thereof, and detergents containing same |
| 05/02/1989 | US4826774 Vapocheromic double-complex salts |
| 05/02/1989 | US4826773 Ammonium molybdate; photometry |
| 05/02/1989 | US4826772 P-nitrobenzyl pyridine, ammonium chloride, developer |
| 05/02/1989 | US4826762 Enzymatic temperature change indicator |
| 05/02/1989 | US4826761 For colorimetric analysis |
| 05/02/1989 | US4826659 Apparatus for feed-in and ejection of chemical analysis slide |
| 04/27/1989 | DE3735307A1 Diffusionssammler Diffusive samplers |
| 04/26/1989 | EP0312826A2 Device for analysing a plurality of gases |
| 04/25/1989 | US4824827 Time-color indicators |
| 04/25/1989 | US4824790 Furnace, optical analysis cell |
| 04/25/1989 | US4824789 Gas sensor |
| 04/25/1989 | US4824640 Transparent test strip system |
| 04/25/1989 | US4824639 Test device and a method for the detection of a component of a liquid sample |
| 04/25/1989 | US4824529 Lipid membrane-based device |
| 04/25/1989 | CA1253058A1 Stable chloride test device |
| 04/25/1989 | CA1253057A1 Ion test means having a porous carrier matrix |