| 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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| 08/04/1994 | WO1994017199A1 Compositions useful in anaerobic determination of analytes |
| 08/04/1994 | CA2154654A1 A solid state sensor for carbon monoxide |
| 08/03/1994 | EP0608820A1 Analytical composition |
| 07/27/1994 | CN1090051A Method for analyzing complex formability of complex ammoniacal copper and its mixed acid content |
| 07/27/1994 | CN1090050A Method for quickly determining sulfur in coal |
| 07/27/1994 | CN1090045A Method for determining silicon content |
| 07/26/1994 | US5332548 Detecting gas or volatile analyte, i.e. formaldehyde |
| 07/21/1994 | WO1994016324A1 Method and kit for estimating the amount of methyl anthranilate |
| 07/21/1994 | WO1994016323A1 Temperature stabilized fluid calibration system |
| 07/21/1994 | WO1994016317A1 High current coulometric kf titrator |
| 07/20/1994 | EP0606977A2 Analytical method for nonmetallic contaminants in silicon |
| 07/20/1994 | EP0606327A1 SENSOR MEMBRANE FOR DISPLAYING THE pH-VALUE OF A SAMPLE, METHOD OF MANUFACTURING THE MEMBRANE, AND ITS USE |
| 07/19/1994 | US5330891 Method for detection of a nucleic acid using particulate reagent having polyoxyalkylene side chains |
| 07/19/1994 | US5330855 Planar epitaxial films of SnO2 |
| 07/19/1994 | US5330718 Carbon dioxide, optical fibers |
| 07/19/1994 | US5330714 Process and apparatus for simultaneous measurement of sulfur and non-sulfur containing compounds |
| 07/19/1994 | US5329686 Slide frame and manufacturing process |
| 07/13/1994 | EP0606187A2 Composite reactive articles for the determination of cyanide |
| 07/13/1994 | EP0341249B1 Developing system and a method of using the developing system for detection of carboxylic acids |
| 07/13/1994 | CN2171855Y Continous liquid adder |
| 07/12/1994 | US5328852 Analytical assay |
| 07/12/1994 | US5328850 Merocyanine protein error indicators |
| 07/12/1994 | US5328664 Prepackaged fluid test system for determining levels of a substance |
| 07/12/1994 | US5328663 Apparatus for the trapping of reaction products |
| 07/09/1994 | CA2111024A1 Composite reactive articles for the determination of cyanide |
| 07/05/1994 | US5326707 Composition and device for urinary protein assay and method of using the same |
| 07/05/1994 | US5326697 Composition and method of assaying for D-β-hydroxybutyrate |
| 06/29/1994 | EP0603657A2 Sensor for determining sulfites in liquid or gaseous media and production thereof |
| 06/29/1994 | CN2170519Y Liquid meter |
| 06/29/1994 | CN1088684A Quick method for checking adulterated peppermint oil |
| 06/28/1994 | US5324666 Process for determining oxidizable substances contained in an aqueous sample liquid |
| 06/28/1994 | US5324399 Method and system for monitoring quality of phosphate coating |
| 06/23/1994 | WO1994014059A1 Low oxygen transmission imaging system |
| 06/23/1994 | WO1994014058A1 Control reagent containing a hydroxylamine or an antioxidant |
| 06/22/1994 | EP0694164A4 Method for optically measuring chemical analytes |
| 06/22/1994 | CN1088309A Potassium, sodium, chlorine and calcium determinating reagent and its producing process |
| 06/21/1994 | US5322797 Method for detecting vapor and liquid reactants |
| 06/21/1994 | US5322680 Substituted 2-thiazolyl tetrazolium salt indicators |
| 06/15/1994 | EP0601171A1 A device for indicating the presence of carbon dioxide in a patient's exhaled air. |
| 06/14/1994 | US5320969 Method, composition and device for the semiquantitative determination of specific gravity of a test sample |
| 06/14/1994 | US5320807 Test kits for determining the chemical stability of a compost sample |
| 06/14/1994 | CA1330197C Reaction vessel for performing sequential analytical assays |
| 06/09/1994 | WO1994012858A1 Solid state device for monitoring integral values of time and temperature of storage of perishables |
| 06/09/1994 | DE4230717A1 Novel reagents for Karl-Fischer water analysis - comprising aprotic solvent solns. of 1:1 SO2:amine adducts used with iodine |
| 06/08/1994 | CN1087723A Quick determining method for hardness of boiler water and its determine instrument |
| 06/07/1994 | US5318912 Chromium, vanadyl, manganese, cobalt or iron mono-, di- or tri-azatetrabenzoporphyrin |
| 06/07/1994 | US5318894 Composition, device and method of assaying for peroxidatively active substances |
| 06/07/1994 | US5318754 Low thermoconductive construction material for door and furnace walls; continuous cooling of surfaces by circulating air; accuracy; materials handling |
| 06/01/1994 | EP0599091A2 Titrating components and reagent for the determination of water content |
| 06/01/1994 | EP0346384B1 Method and system for determining organic matter in an aqueous solution |
| 06/01/1994 | CN1087429A Detector for measuring density of carbon dioxide gas |
| 05/31/1994 | US5316949 Method of detecting the permeability of an object to oxygen |
| 05/31/1994 | US5315885 Sample dispersing apparatus and method |
| 05/26/1994 | WO1994011726A1 Non-azo 1,8-naphthalimide dyes for the detection and quantitation of a paramagnetic metal cation in a non-aqueous medium |
| 05/26/1994 | CA2147876A1 Non-azo 1,8-naphthalimide dyes for the detection and quantitation of a paramagnetic metal cation in a non-aqueous medium |
| 05/25/1994 | EP0598460A2 Method for analysing substances and measuring cell for carrying out the method |
| 05/25/1994 | EP0598262A2 Breath-sampling device for measuring breath component levels |
| 05/25/1994 | EP0597919A1 Very low temperature ashing (vlta) |
| 05/25/1994 | EP0597900A1 Colorimetric determination of magnesium ions in fluids |
| 05/25/1994 | EP0573572A4 Improved test strip |
| 05/25/1994 | CN2166445Y COD automatic analysis instrument |
| 05/24/1994 | US5315035 Aniline derivatives useful as color formers |
| 05/24/1994 | US5314827 Isotopic composition analyzer |
| 05/24/1994 | US5314662 Sample autoloader for use with an analytical combustion furnace |
| 05/19/1994 | DE4334949A1 New nitrogen substd. phenol red dyes and sulphonaphthalein - having amino or nitro gps. and prepn. from amino sulphobenzoic anhydride and phenols and bondable to e.g. polymeric matrix for pH indicators |
| 05/18/1994 | EP0597566A1 Sensor element and method for making the same |
| 05/18/1994 | EP0597410A1 Composition for detecting peroxide active material |
| 05/17/1994 | US5312761 Reacting yellow phosphorus vapor and oxygen in a sample gas |
| 05/17/1994 | US5312591 Analyzing components contained in a liquid sample such as urine |
| 05/11/1994 | EP0596700A1 Cis-diol detection method and solid supports |
| 05/11/1994 | DE4334770A1 Melting crucible for testing metallic or ceramic samples - with protruding upper rim to prevent rising of molten sample material |
| 05/11/1994 | CN1086603A Fluid injection analysis of multicomponent alkalis and strong alkalis |
| 05/10/1994 | US5310888 Arylazo chromoionophores |
| 05/10/1994 | US5310683 Combustion to produce sulfur monoxide, ionic species and other products; electroconductivity and chemiluminescence measured |
| 05/10/1994 | US5310681 Concentrating vapors; flash-heating; pyrolysis; explosives |
| 05/10/1994 | US5310525 Fluid detection device |
| 05/10/1994 | CA1329329C Test piece coloration comparative decision unit |
| 05/04/1994 | CN1086315A Production method for standard solution ampoule preparation for sanitary inspection of food |
| 05/03/1994 | US5308773 Non-azo 1,8-naphthalimide dyes for the detection and quantitation of a paramagnetic metal cation in a non-aqueous medium |
| 05/03/1994 | US5308581 Substance of an optical fluorescence measuring arrangement for measuring the pH of a sample and optical sensor with such an indicator substance |
| 05/03/1994 | US5308495 Quantitative, qualitative, and colorimetric analysis |
| 05/03/1994 | CA2102146A1 Method and device for measurement of no contents |
| 04/28/1994 | WO1994009360A1 Assay for cationic surfactants |
| 04/28/1994 | DE3250066C2 Measuring ion strength of electrolyte |
| 04/27/1994 | EP0594047A1 Arylazo chromoionophores |
| 04/27/1994 | EP0593764A1 Dental testing composition |
| 04/27/1994 | EP0593485A1 Assay for dibromonitrilopropionamide |
| 04/26/1994 | US5307455 Display of multiple variable relationships |
| 04/26/1994 | US5306466 Detection of contaminants in food |
| 04/26/1994 | US5306343 Adding polyamine compound as tag, forming asphalt composition, taking sample, extracting tag and reacting with diazo compound to produce color |
| 04/20/1994 | EP0593103A1 Compositions for forming water-disintegrable coats |
| 04/20/1994 | EP0592632A1 Method for measuring the concentration of carbon dioxide dissolved in sea water, and device therefor |
| 04/20/1994 | CN1085661A Method for measuring high OS and Ru contents in complex solution |
| 04/15/1994 | CA2089709A1 Sensor element and method for making the same |
| 04/14/1994 | WO1994008243A1 Flow injection back titration |
| 04/14/1994 | WO1994008045A1 Stable reagent for ferric ion complex indicator systems |
| 04/14/1994 | WO1994007593A1 Improved sensor membranes |
| 04/14/1994 | CA2145996A1 Improved sensor membranes |
| 04/12/1994 | US5302731 Increased fluorescence with decreasing pH |
| 04/12/1994 | US5302351 Length of stain dosimeter |