DILUTION DEVICE

PROBLEM TO BE SOLVED: To provide a dilution device capable of a more certain, more sufficient dilution treatment. SOLUTION: The dilution device 1 includes: a container 2 which is bottomed, covered, and hollow cylindrical; a dilution object gas introduction part 3 which is located in the middle of a lid surface part 2a of the container 2 and introduces a dilution object gas into the container 2 in the axial direction A; a diluent introduction part 4 which is located on an outer peripheral surface part 2b of the container 2 and introduces the diluent in the circumferential direction θ along the inner skin of the container 2; and a discharge part 5 which is located on the outer peripheral surface part 2b of the container 2 and exhausts a mixed gas of the dilution object gas and the diluent mixed out of the container 2. COPYRIGHT: (C)2011,JPO&INPIT