Horiba, Ltd.

Sankyo Company, Limited

Horibe, Ltd.

Takeshi Kohno

Yoshihiro Sato

Yukio Saito

Hiroaki Uematsu

Koichi Sekiya

Seiji Usui

Hiroaki Takahasi

Kenji Yamamoto

Katsuhiko Tomita

Haruo Kotani

Narihiro Oku

Kunio Terada

Junji Kojima

Takeshi Miyazaki

Takayuki Aoki

The present invention relates to a chemical luminescence-detecting apparatus that is provided with a plurality of optical detectors different in sensitivity in the vicinity of a photometric cell. A ratio of outputs from the optical detectors based on intensity of luminescence is previously determined and stored. Signal processing can multiply an output of a low sensitivity optical detector by a factor determined by the stored ratio to measure the intensity of luminescence so that a conversion value corresponding to an equivalent output from a high sensitivity optical detector may be obtained when the output from the high sensitivity optical detector has become saturated.

Chemical luminescence-detecting apparatus with multiple sensors

The present invention relates to a method of measuring a concentration of a substance in an enzyme immuno assay system comprised of two optical detectors and a method of calibrating the same. A calibration curve is prepared by the use of the standard samples having known concentrations to be memorized, the standard samples being measured by the two optical detectors, conversion values of outputs from two optical detectors being determined from the resulting measured values, and the calibration curve being corrected on the basis of the conversion values of outputs to establish a new one-piece continuous calibration curve.

Method of calibrating an enzyme immuno assay system

An improved flow-through type electrode assembly includes an insulating transparent housing member having a transverse sample liquid passageway. A hollow cylindrical cathode forms a portion of the passageway and is physically displaced from a removable anode member that can be resiliently positioned in the passageway. A series of similar electrode assemblies can be interconnected together.

Flow-through type hydrogen peroxide electrode

The present invention is characterized by a solid body disposed so that a remarkably small gap may be formed between it and a surface of an electrode. A super-thin liquid membrane is formed in the small gap by an interfacial tension of a liquid. An object to be measured is applied to or acted upon either the solid body or the super-thin liquid membrane. An electric signal due to the physical properties of the super-thin liquid membrane itself or an electric signal due to a chemical or physical reaction, which is generated on an interface of the solid body and the super-thin liquid membrane and diffused through the super-thin liquid membrane itself, is detected by means of the electrode to measure the physical properties of the object to be measured.

Method of measuring physical properties by super-thin liquid membrane

A composition for use in a chloride ion electrode is provided herein. This composition is made up of a mixture of an epoxy resin, a vinyl chloride resin, one or more solvents, a quaternary ammonium salt and hardening agents for setting said epoxy resin; wherein said epoxy resin and the vinyl chloride resin is used at a ratio of 8:1 to 1:2 by weight. The present invention also relates to a response membrane produced from said composition and a method for producing the response membrane by setting or hardening the aforementioned composition. When the response membrane is used in the chloride ion selective electrode, it is capable of measuring a sample containing blood or protein and by use of the response membrane, it is possible to selectively determine chloride ions in a sample with a high degree of accuracy.

Method for producing a response membrane for use in a chloride ion

A standard solution for simultaneously calibrating a plurality of ion electrodes for determining a plurality of ion electrodes for determining a plurality of ions including at least potassium ions and calcium ions in blood, the improvement wherein the concentration of the standard solution for a potassium ion electrode and a calcium ion electrode is adjusted in accordance with the following equations: ##EQU1## As for potassium ion,

Standard solution for simultaneously calibrating a plurality of ion

A flow through type glass electrode has a resin body having a hollow interior and having bores in the opposite ends thereof extending from the outside into the interior and aligned with each other, an internal electrode positioned in the interior, a straight unitary hollow glass capillary tube extending through the bores and interior and having a uniform diameter sample flow passage therethrough, sealing members in sealing engagement around the tube and in sealing engagement in the bores where the bores open into the interior, plugs closely fitted around the tube and closely fitted in the bores where the bores open out of the body and being spaced from the sealing members along the bores to define an insulating material receiving space therebetween and extending along each bore, an insulating material filling the insulating material receiving space, and an internal liquid filling the interior.

Growing community of inventors

Hirakata, Japan

Takeshi Kohno