Quick guide to inhaler testing and global pharmacopoeial requirements – Live Webinar in association with Copley Scientific & Apex inhalation Kumar Jeetendra | January 7, 2022 One of the enduring problems that this United States Pharmacopeia (USP) is the need to establish guidelines for testing standards that represent common use. Dry powder inhalers that are passive (DPIs) depend solely on the inhalation effort produced by the patient in order to generate an aerosol that can be breathed. In the past, DPIs have been …