Welcome to the “Impurity Standards and Quality Assurance Forum,” where we focus on the pivotal role of impurity standards in analytical testing. These standards consist of known impurity substances used as reference materials to verify, calibrate, or identify impurity content in samples, assuring the precision and reliability of analytical results. Our discussions emphasize standards that comply with international guidelines such as those from the United States Pharmacopeia (USP), European Pharmacopoeia (EP), and International Pharmacopoeia (ICH). Join us to learn more about ensuring high-quality and accurate analytical practices.