PROPELLANT FORMULATIONS

摘要

The present invention provides propellant formulations for non-pharmaceutical use in dispersing insoluble particles having biological activity, such as bacterial spores and/or biological analogues, using a dispersion device such as a metered-dose inhaler. It is preferred that the propellant formulations of the present invention are chemically compatible with the biological analogues with which they are to be used, have substantially the same specific gravity as the biological analogues, and have sufficient vapor pressure to prevent agglomeration of the biological analogues. Methods of dispersing said biological analogues in accordance with the present invention are also provided.