Innovation in analytical tools: More signal and less noise in particle size testing of inhaled products

APSD testing is still one of the best in vitro indicators of expected in vivo effectiveness, but from a QbD perspective, analytical variability and increased testing requirements to create robust datasets present a barrier to progress. Understanding and controlling critical analytical method parameters is fundamental to device performance and the foundation of robust analytical testing. For OINDP testing, better tools, technology, and automated testing equipment are increasingly embraced as routes to improving the speed of device development, device performance and testing productivity.