Published in Lab Law Weekly, August 19th, 2005
"Metered inhalers using chlorofluorocarbon (CFC) propellents have been gradually replaced by new devices that use hydrofluoroalkanes (HFAs) as their propellents, which are less harmful to the environment," scientists in Italy explained. "This reformulation led to a substantial improvement of the previous technologies applied to inhalation devices and of the physical characteristics of drugs delivered."
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