Patent ID: 7556778

Claim:
A fluid handling apparatus comprising an apparatus body having a plurality of recessed portion which are formed in one surface of the apparatus body so as to be arrayed, and a plurality of fluid handling subassemblies, each of which is mounted in a corresponding one of the plurality of recessed portions, each of the fluid handling subassemblies comprising: an injecting section for injecting a fluid, said injecting section having a bottom which has an opening; a fluidized section for receiving the fluid from the opening of the bottom of the injecting section to allow the fluid to continuously flow downwards; a fluid housing chamber for receiving the fluid from the fluidized section; a fluid passage for allowing the fluid, which reaches a bottom of the fluidized section, to be fed to a lower portion of the fluid housing chamber; and a surface-area increasing means, arranged in the fluidized section, for increasing a surface area of a contact surface with the fluid in the fluidized section, wherein said injecting section and said fluidized section are arranged so as to surround said fluid housing chamber.