Panasonic Corporation

Matsushita Electric Industrial Co., Ltd.

Hideyuki Kurokawa

Masahiro Aga

Takahiko Tanida

Ryosuke Yamada

Kenji Murakami

Koji Miyoshi

Yoshiyuki Fujii

Junji Tada

Mie Takahashi

Yoko Matsuda

Disclosed is a method for analyzing a sample solution, including introducing a sample solutionthrough a sample introduction partand developing the sample solutionto a developing layerthrough a capillary phenomenon to analyze an analyte contained in the sample solution, the sample introduction partbeing provided on one side of a test stripand the developing layerbeing provided on the other side of the test strip, wherein the test stripis disposed in such a development posture that the downstream region of the developing layer faces downward during the development. By this method, the developing rate is less susceptible to the viscosity of the sample solutionand thus has a small difference even among sample solutionsdiffering in viscosity. As a result, the analytical accuracy and reliability can be improved.

Method for analyzing sample solution and apparatus for analyzing sample solution

By measuring a luminance difference between predetermined two points or a luminance variation in a predetermined region in a state in which a liquid sample is developed in a chromatography specimen, and comparing the luminance difference or the luminance variation with a preset reference value, it is possible to automatically detect degradation such as a decrease in hydrophilicity in the lower portion of a liquid-impermeable sheet materialduring a chromatography inspection, thereby enabling an accurate inspection.

Chromatography inspection apparatus and method for judging degradation of chromatography specimen

Provided is a liquid sample analyzing method for analyzing an analyte in a liquid sample by using a test piece () on which overflow blocking lines () are formed to prevent the liquid sample from flowing to the outside from a passage region () of an extended layer (). In a state in which the liquid sample is not extended in the passage region () of the extended region (), the test piece () is measured so as to cross the passage region () of the extended layer () and the overflow blocking lines (). Thus in a state in which a difference in brightness is large between the passage region () of the extended region () and the overflow blocking lines (), it is possible to properly recognize the boundary portions between the passage region () of the extended region () and the overflow blocking lines ().

Liquid sample analyzing method

A liquid sample analysis device includes a holder partholding a test piece, an optical systemthat optically detects a reaction state of a liquid sample and a reagent, and a support memberthat integrally supports the holder partand the optical system. The orientation of the test pieceis changed with respect to the direction of gravitational force by rotating the support member

Liquid sample analysis device

Provided is a device in which light from a samplefixed in a test pieceis captured by an image sensorthrough an optical system made up of a lens, a diaphragm, and so on and concentration information is obtained, wherein a wide-band light sourcefor illuminating the test pieceis combined with an optical filterfor optionally selecting a wavelength of the light captured by the image sensor. Thus it is possible to reduce a measurement error caused by a change of the light quantity distribution of the light source

Analyzing device and analyzing method

A particulate determination method determines by onetime scanning, the size of a particulate included in a plurality of particulates of various sizes which are arranged on a disc. False recognition of the number of particulates is avoided even when a plurality of particulates are adjacent to each other. A photodetector detection signal is judged using plural threshold values according to the sizes of particulates to be detected. Results of determinations corresponding to the respective threshold values are stored on mutually independent memory maps. When counting particulates, a particulate size and a particulate count value are determined from a combination of stored data appearing in a scanning window at the same position on the respective memory maps.

Particulate determination method

A particulate determination method determines by onetime scanning, the size of a particulate included in a plurality of particulates of various sizes which are arranged on a disc. False recognition of the number of particulates is avoided even when a plurality of particulates are adjacent to each other. A photodector detection signal is judged using plural threshold values according to the sizes of particulates to be detected. Results of determinations corresponding to the respective threshold values are stored on mutually independent memory maps. When counting particulates, a particulate size and a particulate count value are determined from a combination of stored data appearing in a scanning window at the same position on the respective memory maps.

Growing community of inventors

Ehime, Japan

Hideyuki Kurokawa