To provide an inspection implement by which an electrode is inspected in a short time and simply without consuming a liquid such as tap water or the like.

The inspection implement 1 comprises transparent pipe mainframes 24, 31, 41 with graduations (g) at set intervals, lower end of it is closed and upper end is opened. The implement 1 is fixed to a ceiling wall Ta to be freely detachable so as to face an electrode seat 51 fixed to the ceiling wall Ta in a liquid storage tank T. The electrode in an electrode holder is inserted into the inspection implement 1, the electrode holder is fixed to the electrode seat 51, the liquid is injected into the inspection implement 1, and the electrode is inspected.