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| Number | Title | Issue Date |
| 4692415 | Process for the determination of cyanamide in plants and plant parts The present invention provides a process for the determination of cyanamide in plants or plant parts, wherein (a) the cyanamide is extracted from the plants, (b) it is subsequently reacted in aqueous alkaline medium with 1,2-naphthoquinone-4-sulphonate to give... | 09/08/1987 |
| 4654309 | Test method and article for estimating the concentration of free acid in liquid An article for testing liquid for free fatty acid comprises a substantially nonreactive, neutral and non-buffering, porous, absorbant support material having at least one portion thereof which contains a composition comprising an effective amount of acid-... | 03/31/1987 |
| 4617276 | Novel method for quantitating structural and non-structural carbohydrates in feedstuffs A novel method of determining the portion of a given dairy cow feedstuff which is attributable to non-structural carbohydrates is disclosed. The method includes the steps of analytically determining the percentages of crude protein, lipid and ash in the d... | 10/14/1986 |
| 4421858 | Method for determining the concentration of selected ingredients in animal feeds The present invention describes a method where, by using gentian violet as a tracer substance, the concentration of one or more selected components or factors of a complete animal feedstuff may be monitored throughout the life of the feed whether at the m... | 12/20/1983 |
| 4410632 | Gas sensing apparatus and method A sensing apparatus and method for qualitatively and quantitatively analyzing small amounts of selected oxidizable gases in a carrier gas including the associated electronic circuitry is described. The apparatus preferably includes two semi-conductor type... | 10/18/1983 |
| 4377641 | Method and apparatus for the continuous extraction of ingredients from samples A method and apparatus for continuous extraction of an ingredient from a sample employs a container having a solvent therein selected for its ability to extract the ingredient. The sample is held against a porous substrate having a lower portion which is ... | 03/22/1983 |
| 4314027 | Method of detecting mold toxin infected grains A method of detecting mold toxin infected grains. The method involves obtaining a gaseous sample from the grain which is representative of the volatiles which are produced within the grain, and thereafter determining by gas chromatographic analysis of sai... | 02/02/1982 |
| 4300905 | Rapid test for ascorbic acid determination Compositions and methods for rapidly determining ascorbic acid in aqueous solutions, consisting of an absorbent carrier containing 2,18-phosphomolybdic acid, an aliphatic hydroxycarboxylic acid buffer to adjust the test to pH 2.5 to 5.0, and an alkali chl... | 11/17/1981 |
| 4285697 | Food spoilage indicator A food spoilage indicator comprising a liquid crystal disposed in a carrier of plastic tape, at least one portion of which is semi-permeable to gases generated in food spoilage.... | 08/25/1981 |
| 4285698 | Analysis of aflatoxins in peanuts by high pressure liquid chromatograph A method is disclosed for quickly and easily determining the presence and concentration of aflatoxins in peanuts. Aflatoxins are extracted from ground peanuts with a methanol-water solution using a tissuemizer. The extracted sample is filtered and an aliq... | 08/25/1981 |
| 4277248 | Methods for the detection of low level concentrations of sulfonamides Methods for the determination of low levels of sulfonamides, and, in particular, sulfadimethoxine, in poultry feeds are disclosed.... | 07/07/1981 |
| 4257775 | Determination of water content in various systems The invention deals with the determination of water content in many systems, as the basis for the method, as, for example, in oil- and water-containing emulsions, using adsorbent solids and the temperature rise caused upon adsorption of water thereby.... | 03/24/1981 |
| 4253848 | Method for determining oxidative status of unsaturated lipids and method for evaluating antioxidant effectiveness in lipid-polypeptide layers A method for rapid, dry, non-destructive assay of the oxidative status of unsaturated lipids in whole foods, fats or oils and a method for prediction of the storage life of such lipids are disclosed. A method for evaluating the effectiveness of natural or... | 03/03/1981 |
| 4229180 | Process and catalyst for determining nitrogen in a sample according to the Kjeldahl principle An antimonate, such as potassium antimonate, is used as the destruction catalyst in nitrogen determinations according to the Kjeldahl principle. Preferred catalyst comprises potassium antimonate together with potassium sulfate (for increasing the boiling ... | 10/21/1980 |
| 4209299 | Method and apparatus for determination of volatile electrolytes Quantitative determination of a particular type of volatile material in a liquid is determined by first transferring the desired volatile, suppressing other volatiles if necessary, to a liquid of known conductivity, such as deionized, degassed water. Tran... | 06/24/1980 |
| 4155713 | Assay of antioxidant concentration by titration with peroxy radicals Effective antioxidant levels in hydrocarbonaceous materials are determined by (a) establishing the rate of uninhibited oxygen absorption for a standard liquid comprising (i) an oxidizable material susceptible to free radical oxidation and (ii) an agent th... | 05/22/1979 |
| 4098575 | Peroxide value determining test for oils and fats A test paper, manufactured by impregnating a glass fiber-made paper or cloth with a starch and potassium iodide reagent, liberates iodine on the test paper in such a quantity as to exactly correspond to the peroxide content of an oil or fat coming into co... | 07/04/1978 |
| 4094646 | Rapid method of assaying collagen in meat and meat products A rapid method for assaying collagen in meat and meat products. A sample of the material being tested is subjected to a controlled, incomplete hydrolysis of the amino acids with an acidified solution of stannous chloride in such a way that all of the tryp... | 06/13/1978 |
| 4094640 | Method for processing biomaterials A method for processing biomaterial, particularly meat, in which coarsely comminuted biomaterial with a moisture of up to 80% is dried in a processing vessel down to a residual moisture of about 5-10% and subsequently burned at a pressure of 20 to 40 bar ... | 06/13/1978 |
| 4042327 | Ion-pairing chromatography Liquid chromatographic processing of compositions containing ionizable compounds. The chromatographic column is formed of a stationary packing having a chemical group chemically bonded thereto and a counter ion is added to the polar mobile liquid. The cou... | 08/16/1977 |
| 4033721 | Analysis of gentian violet residue in tissue A process for the analysis of gentian violet in animal or poultry tissue, animal or poultry manure, animal or poultry feed, or eggs. The gentian violet is quantitatively determined.... | 07/05/1977 |
| 4026666 | Method of determining soy material in foods A method of determining the amount of soy material in a food product by drmining the fluorescence intensity at a wavelength of about 445 nanometers produced by excitation at a wavelength of 360 nanometers in the ultraviolet portion of the spectrum of a s... | 05/31/1977 |
| 4025309 | Carbon nitrogen test system An analytical method for determining the elemental carbon and nitrogen contents of a sample. The sample, as a liquid or in finely divided solid form is placed in an evacuable pressure vessel and is then oxidized with a cupric oxide oxidizing agent to conv... | 05/24/1977 |
| 4015936 | Method for determination of total nitrogen and heavy nitrogen content The total nitrogen content of a given specimen is determined by sealing the specimen in conjunction with copper oxide and calcium oxide in a tube under vacuum to form a sealed specimen tube, heating the sealed specimen tube and consequently causing the sp... | 04/05/1977 |
| 4000975 | Method of measuring damage to grain A method of measuring mechanical damage to a grain, such as corn, includes applying a reacting solution to a sample of corn. The solution contains a material, such as 8-anilino-1-naphthalene sulfonic acid, that reacts selectively with the damaged portion ... | 01/04/1977 |
| 3980433 | Method for determining carboxylic acid and system for carrying out the method A method for determining the amount of carboxylic acid in which a carboxylic acid in a sample sample is reacted with a hydroxylammonium salt under the presence of carbodiimide to provide hydroxamic acid and the thus formed hydroxamic acid is reacted with ... | 09/14/1976 |
| 3975158 | Analysis of gentian violet residue in tissue A process for the analysis of gentian violet in animal or poultry tissue, animal or poultry manure, animal or poultry feed, or eggs. The gentian violet is quantitatively determined.... | 08/17/1976 |
| 3961895 | Process and equipment for the determination of certain components, particularly the carbon dioxide content of gas mixture A component of a gaseous mixture, particularly carbon dioxide, can be measured in extremely small quantities or concentrations, by supporting on a solid surface a thin film of a liquid, e.g. an aqueous solution of barium hydroxide, which reacts with the g... | 06/08/1976 |
| 3936271 | Method for protein analysis A dye-binding method for the rapid and accurate colorimetric determination of the percentage of protein in meat. The method is accurate irrespective of the degree of denaturization of the protein or coarseness of the meat to be analyzed.... | 02/03/1976 |
