US Patent 7364553 Breath aerosol management and collection system

Aerosol collectors 10, 120 include pre-collection filters 100, 126, aerosol collection chambers 30, 130, and other exhaled breath conditioning and control features for providing not only accurate and efficient, but also reliable and reproducible aerosol collections that can be used in standardizations and can be compared in meaningful ways to other exhaled breath aerosol collections from the same test subject and from different test subjects. The aerosol collector 10 example includes electrostatic collection components 34, 40, and the aerosol collector 120 includes nucleating condensation components 168, 172 and vortex collection components 132, 138. Both include analyte extraction apparatus 50, 124.