PROBLEM TO BE SOLVED: To calculate a calibration curve with respect to a concentration logarithmic value without depending a unit system when representing a target substance concentration.;SOLUTION: A calibration curve creation device comprises an input section and a calibration curve acquisition section. The input section inputs, as a measurement, a value obtained in accordance with a concentration value of a target substance. The calibration curve acquisition section acquires a calibration curve, from a plurality of data couples of measurements inputted with respect to a plurality of standard samples including the target substance of the known concentration value and concentration values corresponding to the measurements while using a function, representing an S-shaped curve, including a parameter indicating a shift amount in a concentration direction on a plane spread with measurements and logarithmic values of the concentration.;COPYRIGHT: (C)2013,JPO&INPIT
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