PROBLEM TO BE SOLVED: To provide a measuring device that can accurately measure concentration of a specific component contained in a liquid to be tested.SOLUTION: A lactic acid value measuring device 1 includes: a first detector 25 including stimulation response gel 24 that expands or contracts depending on stimulation of lactic acid of sweat 28 and provided between first electrodes 22 a second detector 26 for installing the sweat 28 between second electrodes 23 and an impedance measurement part 32 for measuring an electrical conductivity between the first electrodes 22 and an electrical conductivity between the second electrodes 23.SELECTED DRAWING: Figure 10COPYRIGHT: (C)2018,JPO&INPIT【課題】被検査液に含まれる所定の成分の濃度を精度良く測定できる測定装置を提供する。【解決手段】乳酸値測定装置1は汗28の乳酸による刺激により膨張または収縮する刺激応答性ゲル24を第1電極22間に設置した第1検出部25と、汗28を第2電極23間に設置する第2検出部26と、第1電極22間の導電率及び第2電極23間の導電率を測定するインピーダンス測定部32と、を備える。【選択図】図10
