| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lid body capable of easily confirming an oxidation-reduction potential of liquid stored within a container without opening the container and having a compact size. <P>SOLUTION: The lid body 100 being a member for detachably closing an opening 51 of the container 50 storing the liquid R includes: a pair of electrodes 11, 12 disposed so as to enable contact with the liquid R within the container 50; a control circuit 13 having a function for calculating the oxidation-reduction potential on the basis of a potential difference generated between the electrodes 11, 12 when the liquid R within the container 50 is brought into contact with the electrodes 11, 12 and other functions; and light emitters 14, 15 serving as display means displaying a calculation result by the control circuit 13. The electrode 11 is a platinum electrode and the electrode 12 is a silver chloride electrode. When the oxidation-reduction potential calculated based on the potential difference between the electrodes 11, 12 is higher than a preset reference potential, the green LED light emitter 15 is lit, and when the oxidation-reduction potential is lower than the reference potential, the red LED light emitter body 14 is lit. <P>COPYRIGHT: (C)2013,JPO&INPIT |
