The assessment of all materials - and especially elastomeric and plastic components - for the presence of leachable and extractable components, forms an important part of the submission for approval of a new drug system or medical device. This Update gives a detailed, state-of-the-art review of the selection of techniques, available to the analyst, to perform a controlled extraction study for leachables and extractables, with an overview of the factors to consider when selecting the extraction technique. This book will be of interest to Chemists and R&D managers.