Generating method for generating ultra-fine bubble-containing liquid containing ultra-fine bubbles and manufacturing apparatus for liquid containing ultra-fine bubbles

A manufacturing apparatus for an ultra-fine bubble-containing liquid comprising:

• a first dissolving device to generate a first solution by dissolving a first gas into a liquid;
• a second dissolving device to generate a second solution by dissolving a second gas into a liquid;
• a first generating device to generate a first ultra-fine bubble-containing liquid containing ultra-fine bubbles by generating the ultra-fine bubbles that are generated by heating the first solution with a first heating element to make film boiling on an interface between the first solution and the first heating element;
• a second generating device to generate a second ultra-fine bubble-containing liquid containing ultra-fine bubbles by generating the ultra-fine bubbles that are generated by heating the second solution with a second heating element to make film boiling on an interface between the first solution and the second heating element;
• a first concentration detecting device to detect a concentration of the ultra-fine bubbles contained in the first ultra-fine bubble-containing liquid;
• a second concentration detecting device to detect a concentration of the ultra-fine bubbles contained in the second ultra-fine bubble-containing liquid;
• and
• a mixing device to mix the first ultra-fine bubble-containing liquid and the second ultra-fine bubble-containing liquid with each other based on a detection result by the first concentration detecting device and the second concentration detecting device.