On October 2, 2018, we held a seminar entitled “Overcoming Characterization Challenges in Drug Formulation” in the Boston area. It was a great opportunity to meet with many pharmaceutical scientists in the area and learn about their challenges and concerns. The presentations addressed a number of topics of interest, from stability of formulations, trace phase and impurity detection, deformulation, root cause analysis, to optimizing small molecule candidate screening. There were great questions from the audience, so we rounded up several questions and answers here to share. How does the Mastersizer 3000 see ...