Otsuka Pharmaceutical Company, Limited

Eiji Ikegami

Masaaki Mori

Yasuhiro Kubo

Kazunori Tsutsui

Tamotsu Hamao

Katsuhiro Morisawa

Yasushi Zasu

Takashi Maruyama

Akira Tanaka

Masao Ninomiya

Tomokuni Inoue

In a test strip measuring method in which a coloration measurement is conducted while a test strip () is being moved, there are detected the optical characteristics R of the ground of a test strip and the optical characteristics T of a test line () which has appeared on the test strip, and the test strip is judged based on the difference or ratio between R and T. Even though the ground of the test strip presents variations in optical characteristics, and even though there are variations among samples or among test strips, such variations can be absorbed, thus assuring an accurate judgment.

Test strip measuring method

A correction curve (FIG.,) is prepared by plotting,CO,concentrations and,CO,/,CO,concentration ratios which are determined on the basis of a calibration curve and,CO,and,CO,absorbances of gaseous samples having the same,CO,/,CO,concentration ratio but known different,CO,concentrations. A gaseous test sample containing,CO,and,CO,as component gases is introduced into a cell, and spectrometrically measured. A,CO,concentration of the gaseous test sample is determined by way of the spectrometric measurement. A concentration ratio correction value is obtained on the basis of the correction curve and the,CO,concentration of the gaseous test sample thus determined. A measured,CO,/,CO,concentration ratio is divided by the concentration ratio correction value thus obtained for correction of the,CO,/,CO,concentration ratio. Thus, the measurement accuracy of the concentration ratios of the component gases can be improved.

Method for spectrometrically measuring isotopic gas and apparatus thereof

Apparatus and breathing bag for spectrometrically measuring isotopic gas

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Kyoto, Japan

Eiji Ikegami