GAS SENSOR

PROBLEM TO BE SOLVED: To provide a gas sensor that causes no functional deterioration caused by moisture contained in a perishable product and simply sensing the gas generated from the perishable product to determine the quality of the perishable product to display it. SOLUTION: The gas sensor 10 includes a transparent base material 11, the gas reaction part 12 and pressure-sensitive adhesive layer 13 provided on one side 11a of the transparent base material 11, the printing region 14 provided to the other surface 11b of the transparent base material 11 and the release base material 15 covering the gas reaction part 12 and superposed on the transparent base material 11 through the pressure-sensitive adhesive layer 13. The layer 13 is provided to the outer edge of the gas reaction part 12 and the printing region 14 is provided to a region not opposed to the gas reaction part 12. COPYRIGHT: (C)2008,JPO&INPIT