Good Cascade impactor practices

Abstract

The CI-based methods for measuring the APSD properties of OIP - produced aerosols are complex, exacting, and laborious to undertake. Yet they are the only accepted methods by regulatory agencies worldwide for determining particle aerodynamic size-related properties. In 2003, a group within the Product Quality Research Institute (PQRI), a body set up by pharmaceutical industry, the FDA, and academia to explore complex scientific and regulatory problems, developed a guide to good cascade impactor practices (GCIP). This chapter contains a review of the essence of their work, augmented by developments that have taken place since the original article was published.