Abstract: [Problem] A preparation of forming bubbles of carbon dioxide gas which is put into a micro-bubble generator is realized, unlike a conventional tablet, as a tablet which can retain an ability to neutralize and remove completely chlorine contained in tap water from start of dissolution of the tablet inside the micro-bubble generator to the completion of dissolution thereof, thereby providing a method for producing micro-bubbles of carbon dioxide gas by using the tablet and a device thereof. [Solution] There is provided a method for producing carbon dioxide gas/micro-bubbles mixed water in which a carbonated bathing agent is a tablet which is 7 mm or more both in tablet diameter and tablet thickness, 15 kg or more in tablet hardness, 10 wt % or less in tablet friability and from 5.5 to 9.

Abstract: A first object of the present invention is to provide a micro-bubble generator of carbon dioxide which is arranged so as to enhance health promoting effects such as improvement of blood circulation due to carbon dioxide gas generated by dissolving a tablet, thereby exhibiting effects of taking a shower of bicarbonate with appropriate concentrations for a prolonged period of time.