Provided always pet hydrogen rich water supply test instrument can be held at a constant value of hydrogen concentration in the drinking water for pets within the open reservoir section to the atmosphere . A formed water storage part 4 to take drinking water for pets in the body 2a is , the water supply tank 6 with an air-tight to the body 2a is attached detachably . The water supply tank 6 in drinking water is automatically supplied to the water storage part 4 by the water supply mechanism for holding the water level in the water storage part 4 constant . The water tank 6 is arranged a first hydrogen generator 28 , a second hydrogen generator 12 for maintaining the hydrogen concentration is arranged in the water storage part 4 . Drinking water of drinking water and water tank 6 in the water storage part 4 and the first and is allowed to react with the magnesium grains in the second hydrogen generator 28,12 to generate hydrogen gas , drinking water in the water storage part 4 the drinking water in the water supply tank 6 can be changed to a hydrogen rich water rich in hydrogen molecules . [ Selection Figure ] Figure 1【課題】大気に開放された貯水部内のペット用の飲料水の水素濃度を常に一定の値に保持できるペット用水素豊富水給供器を提供する。【解決手段】本体2aにペット用の飲料水を入れる貯水部4が形成され、該本体2aに気密性を有する給水タンク6が脱着可能に結合している。給水タンク6内の飲料水は、貯水部4内の水位を一定に保持する給水機構によって貯水部4に自動的に供給される。吸水タンク6内には第1の水素発生器28が配置され、貯水部4には水素濃度維持用の第2の水素発生器12が配置される。貯水部4内の飲料水と吸水タンク6内の飲料水と第1と第2の水素発生器28,12内のマグネシウム粒とを反応させて水素ガスを発生させ、貯水部4内の飲料水と給水タンク6内の飲料水を水素分子を豊富に含む水素豊富水に変えることができる。【選択図】図1
