Matches 201 - 250 out of 265 < 1 2 3 4 5 6 >


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4657739 Integral element for biological reaction and process for the preparation thereof  
An integral element for biological reaction comprising at least two layers consisting essentially of: a composite porous biological reaction layer comprising a fibrous material and a particulate...
4615983 Immunological measuring element  
There is presented a novel immunological element suitable for an immunological assay of an antigen according to the so called two antibody method, which element having two separate sheets, one...
4587101 Measuring device for determining the O2 content of a sample  
In a sensor element for determining the O2 content of a sample, comprising a fluorescent indicator substance which is embedded in a polymer carrier and with which the sample may be brought into...
4587102 Multi-layer analysis element utilizing specific binding reaction  
A dry type multilayer analysis element for assaying a concentration of a specific component utilizing a competitive immunological reaction comprises a detection element comprising a detection...
4578358 Collection of specimens and detection of occult blood therein  
A test for the presence of occult blood in fecal matter or other bodily substance employs an indicator wipe 2. The indicator wipe 2 has an occult-blood detection-test surface 10 for collecting a...
4541987 Test pad for detecting occult blood  
A test pad having a water activated reagent and a water activated peroxygen compound which undergo a chromogen reaction in an aqueous solution including hemoglobin. The reagent is potassium...
4522786 Multilayered test device for detecting analytes in liquid test samples  
A foraminous septum, the foramina of which are filled with a thermally sensitive material, is used to form a barrier layer to separate two functional layers of a multilayered test device. At assay...
4521520 Method for in house occult blood testing  
A method for determining the presence of occult blood in the bowl of a toilet includes the steps of suspending from the seat of the toilet an absorbent test sheet carrying a test reagent,...
4503145 Quantitative analysis film  
An analysis film for assaying transaminase activity comprises a reagent layer containing pyruvic acid oxidase, a combination of a hydrogen donor and a coupler--which is capable of forming a...
4492754 Composition and method for the determination of hydrogen peroxide  
Composition for the detection of (a) hydrogen peroxide or hydrogen peroxide forming substrates or (b) peroxidases or peroxidatively reacting substances which composition comprises a substrate...
4486387 Disposable prevacuum steam sterilizer test device  
A disposable test package for testing the proper functioning of a steam sterilizer is formed with a test sheet adapted to change color in response to the presence of steam under preselected...
4478792 Colorimetric gas dosimeter  
A gas dosimeter comprises a stack of porous sheets, impregnated with a reagent that changes color on contact with the gas to be determined, contained in a housing which has an opening to expose...
4478942 Quantitative analysis film and a method for colorimetric analysis using the same  
A quantitative analysis film comprising a reagent layer comprising a cationic dye-forming color indicator for detecting hydrogen peroxide and an anionic polymer. By the use of such a color...
4472498 Analysis film and a method of analysis using the same  
An analysis film comprises a reagent layer composed of a porous material which contains an antibody but does not substantially contain a complex of an analyte or a labelled antigen with the...
4418037 Color indicator composition and film for detecting hydrogen peroxide  
In a multilayer analysis film for detecting hydrogen peroxide by dry process which comprises a support and a reagent layer having contained therein a color indicator composition comprising...
4405711 Analysis element for immunochemical measurement of trace components and method for immunochemical measurement using the same  
In a method of assay for a trace component such as antigen, antibody or enzyme utilizing immunochemical reaction or enzyme reaction in combination with photographic detection system comprising...
4404289 Method for immunochemical measurement of trace components  
In an immunochemical measurement method of an antigen or antibody which comprises competitively reacting an antigen or antibody labelled with spectral sensitizer and an antigen or antibody to be...
4393142 Assay method and reagent for the determination of chloride  
A colorimetric assay method and reagent composition for the direct, quantitative determination of chloride in fluids which may be performed directly on non-deproteinized samples and which utilizes...
4382063 Sterile indicator device  
A sterility indicator device comprising a base of steam permeable, absorbent material, e.g. paperboard, having mounted thereon at least one, though preferably three separate indicator ink spots of...
4382064 Specimen slide for occult blood testing  
Specimen test slides for occult blood having a receiving sheet between a front panel and a rear panel with openings in the front and rear panels and pivotal covers coated with...
4367286 Reference blood filter paper for measuring the concentration of methionine in the blood  
A reference blood filter paper for measuring the concentration of methionine in the blood, comprising a piece of blood filter paper, a blood material infiltered in the blood filter paper...
4367285 Assaying lipid peroxide in lipid compositions  
Method and kit for measuring lipid peroxides is provided, in which the measuring reagent contains peroxidase and a hydrogen donor. The method can be used to determine the amount of lipid peroxides...
4364917 Continuous process for making calcium hypochlorite  
A process for the continuous preparation of a slurry of calcium hypochlorite wherein a solution of sodium hydroxide is fed to one end of an elongated tubular reaction and a calcium hydroxide...
4328182 Sterilization indicators containing amino acid(s) and pH indicator  
An indicator which is used for indicating the completion of a sterilization process in which an article to be sterilized is exposed to formaldehyde vapor either dry or mixed with steam. The...
4312834 Diagnostic agent for the detection of component materials in liquid and process for producing same  
Diagnostic agent for the detection of component materials, in liquids and method of production. The diagnostic agent includes a water resistant film composed of a film-former and contains a film...
4270919 Process for assessing the presence of oxidizing agents on of keratin fibers  
A process for assessing the state of surface oxidation of keratin fiber(s), especially human hair, which results following treatment with, inter alia, peroxides and bromates. This process involves...
4260393 Method and combined test elements for detection of heme  
A diagnostic method and indicator for heme in controlled sensitivity is provided by impregnating a bibulous body, such as a test strip with a solution of a color indicator in leuco form and drying...
4258135 Device for use in the study of biochemical or enzymatic reactions  
An improved device for the study of biochemical or enzymatic reactions produced by living organisms is disclosed. The device comprises a sandwich of two plastic sheets sealed to each other, the...
4211531 Colorimetric cholesterol assay  
A total cholesterol method includes the steps of (1) precipitation of serum proteins with a reagent containing ferric chloride in propionic acid, (2) color formation by heating aliquots of...
4211530 Test-kit and method for the estimation of LP-X  
A diagnostic method and test-kits for the demonstration and determination of the lipoprotein LP-X in serum by removal of interfering lipoproteins, precipitation of LP-X in the remaining serum and...
4211532 Test composition, method and a test stick for detection of chloride ion in cow's milk  
Test composition and test stick for detection of chloride ion in cow's milk, which composition comprises a protected silver chromate colloidal substance, a surface active agent and a buffer agent...
4201548 Method for determining volatile substances in an aqueous solution and apparatus therefor  
A method for detecting and determining a volatile or volatilizable substance in an aqueous solution or liquid and an apparatus employed for this method are disclosed. The volatile component,...
4166093 Reduction of detectable species migration in elements for the analysis of liquids  
An element for the analysis of liquids contains a radiation-transmissive, detectable species migration-inhibiting layer interposed between a porous radiation-blocking layer and a...
4160008 Multilayered test device for determining the presence of a liquid sample component, and method of use  
A test device for determining the presence of a liquid sample constituent. The device comprises a base support member having attached to it an indicator member which produces a detectable...
4119405 Test means and method for interference resistant determination of oxidizing substances  
Test means, such as a composition or device, method of making a test device and process for determination of at least one oxidizing substance, such as a peroxide, are disclosed. More particularly,...
4076592 Method and apparatus for testing the effect of various antibiotics on a bacterial suspension  
An apparatus for testing a substance is characterized by a substantially planar base member carrying a reservoir extending lengthwise thereon. A plurality of test zones, each having a chemical...
4066408 Chromogen-reactive-indicator preparations containing A 3,3'-di(carbonyloxy- or sulfonyloxy-group-containing) benzidine derivative chromogen  
An analytical test, color change reagent preparation comprising peroxidase, an oxygen-oxidoreductase specific to a particular substance to be tested and a chromogen-reactive-indicator formula...
4061468 Stable test strips having a water-soluble paper layer and methods for making same  
Stable test strips for the detection of components in liquids, for example blood, ketone bodies and nitrates in urine, includes two indicator layers one of which is a water-soluble paper.
4017261 Biological diagnostic test strip and method of producing same  
Diagnostic test strips for the qualitative detection and semi-quantitative estimation of blood and hemoglobin in biological products include a reagent area comprising an acid buffer having a pH...
3984204 Gas monitors  
A method for monitoring the toxic constituent of an ambient gas e.g. sulphur dioxide in air involves bringing the gas into contact with a solution containing one component in which the gas is...
3975161 Biological diagnostic test strip  
Diagnostic test strips for the qualitative detection and semi-quantitative estimation of blood and hemoglobin in biological products include a reagent area comprising an organic hydroperoxide or...
3961530 Method and thermometer for measuring temperature by determination of saturation of a solvent having temperature dependent characteristics  
The thermometer of the invention is characterized by a substance, preferably a salt, the solubility of which changes with temperature and which is present in a solid or liquid phase in the...
3844718 FROZEN FOOD DEFROSTING INDICATOR  
A waterproof transparent capsule containing an indicator including indicia printed in water-soluble ink on a hygroscopic substance is secured to the frozen food shipment to be monitored and the...
3802842 TEST STRIPS  
Test strips for the detection of components in liquids, especially in body fluids, comprising a holder and at least one indicator layer containing detection reagents wherein one surface of the...
3798004 TEST DEVICE  
An improved dip and read type test device having a flat bibulous matrix having an indicator incorporated therewith, the matrix being disposed between and attached to a pair of liquid impervious...
3775256 ANAEROBIC BACTERIA LABORATORY  
Apparatus for receiving and examining anaerobic bacteria. The apparatus provides separate anaerobic areas for culture work or study, for culture incubation, and for refrigerated culture storage....
3730843 MASS SCREENING TEST FOR SERUM TRYPSIN INHIBITORS  
A diagnostic test package for use in an improved semi-quantitative method for estimating antitrypsin levels in human blood.
3715192 INDICATOR STRIP  
An indicator strip, useful in analytical chemical procedures, which comprises an impregnated capillary material having at least a partially transparent film on one side and on the other side, a...
3702755 MOISTURE INDICATOR FOR PLANTS  
3690836 DEVICE FOR USE IN THE STUDY OF CHEMICAL AND BIOLOGICAL REACTIONS AND METHOD OF MAKING SAME  

Matches 201 - 250 out of 265 < 1 2 3 4 5 6 >