Safe, reliable and controlled dissemination of a powder aerosol over a relatively short period is achieved by infusing the powder aerosol into a holding chamber to form a concentrated powder aerosol cloud, reducing the volume of the holding chamber to exhaust the concentrated powder aerosol at a controlled rate, mixing a gas with the concentrated powder aerosol, and monitoring the admixture of gas and concentrated aerosol to achieve a target concentration.

 
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> Tube for use in an anesthetic system

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