Andrew Teasdale, Ph.D, has over 20 years’ experience in the pharmaceutical industry as an analytical chemist and within quality assurance and regulatory roles. In his current role he chairs AstraZeneca’s Impurity Advisory Group. Dr Teasdale has published a number of papers relating to elemental impurities and other impurity related matters and has been a speaker at many international conferences. Dr Teasdale has also led a number of industry expert groups; these include both safety and quality groups within Pharmaceutical Research and Manufacturers of America (PhRMA), European Federation of Pharmaceutical Industries and Associations (EFPIA), Product Quality Research Institute (PQRI) and the Extractables and Leachables safety Information exchange (ELSIE). He also helped establish a cross industry group dedicated to the development of an elemental impurity database for excipients and is currently the leader of the IPEC EU ICH Q3D Implementation taskforce.