There is a regulatory expectation to determine foreign particulate matter (FPM) in respiratory drugs. Control and evaluation of FPM in dry powder inhalers (DPI) can be especially challenging but necessary in order to build a complete understanding of particulate contamination in a product or over an inhaler production process. In this article our expert, Jonathan Brazier, Head of Project Management, Intertek Melbourn, describes the challenges and solutions for FPM determine for DPIs.

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