| CPC A61G 10/005 (2013.01) [A61M 16/12 (2013.01); A61M 2250/00 (2013.01)] | 22 Claims |

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1. An enclosed chamber, comprising:
a horizontal chamber tube operably connected at a proximal end to a first end cap and at a distal end to a second end cap, wherein the horizontal chamber tube comprises a material with a cross sectional dimension that defines a hollow space along the length of the horizontal chamber tube,
the first end cap comprising an inlet and at least one Stairmand disk, and the second end cap comprising an outlet, and further wherein the inlet and the outlet are operably connected through the hollow space to allow passage of a test gas through the enclosed chamber and further wherein the enclosed chamber is configured to disperse an aerosol uniformly within 1 to 3 cm of the proximal end of the horizontal chamber tube.
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