Abstract: Provided is a wet area member for use in an indoor wet environment, comprising: a base member; and an amorphous carbon layer formed on a surface of the base member and mainly containing carbon atoms, wherein the amorphous carbon layer further contains hydrogen atoms, and the amorphous carbon layer contains the hydrogen atoms in a predetermined amount or more and has a density lower than a predetermined value so as to be capable of inhibiting sticking of water scale for a long period. This makes it possible to obtain a wet area member which exhibits a high stain release property and a high stain release durability.

Abstract: Provided is a wet area member for use in an indoor wet environment, comprising: a base member; and an amorphous carbon layer formed on a surface of the base member and mainly containing carbon atoms, wherein the amorphous carbon layer further contains hydrogen atoms, and the amorphous carbon layer contains the hydrogen atoms in a predetermined amount or more and has a density lower than a predetermined value so as to be capable of inhibiting sticking of water scale for a long period. This makes it possible to obtain a wet area member which exhibits a high stain release property and a high stain release durability.

Abstract: Disclosed is a flush toilet unit, which is capable of measuring a urine volume with a high degree of accuracy without making a significant change to a conventional water-closet structure.

Abstract: A method of and system for cleansing a toilet or urinal are proposed which require less maintenance work and are safer to users than conventional methods using acid substances, and which can prevent the formation of stain on the toilet or urinal effectively and suppress the generation of ammonia sufficiently, thus accomplishing a sufficient countermeasure to the stench. A urinal (A1) is provided with a continuous electrolytic cell (1) having at least a pair of electrodes, a passage formed between the electrodes, and an inlet and an outlet that lead to the passage. Tap water is electrolyzed by the continuous electrolytic cell (1), whereby free chlorine is produced. Then the water containing free chlorine produced is supplied to the urinal (A1), and the water containing free chlorine sterilizes the inside of the urinal, thus preventing urease, an enzyme carried by bacteria, from acting to decompose urea.

Abstract: An electrolyzing apparatus for flowing water containing chlorine ions has an electrolytic cell provided with at least one pair of electrodes, a passage formed between the electrodes, an inlet port and an outlet port communicating the passage, and a power supply for applying voltage across the electrodes.