At a time when it is critical to many plastics processors to add value to products, colorants are an essential part of the additives repertoire. Plastics are often processed at very high temperatures and shear, and products are exposed to heat and light. Colorants must tolerate these conditions to function adequately. This Rapra Review Report provides practical information for plastics processors with regard to colorant selection and the range of products and effects available. The review is accompanied by around 400 abstracts from the Rapra Polymer Library database, to facilitate further reading on this subject.

An experimental approach to the study and teaching of color is comprised of exercises in seeing color action and feeling color relatedness before arriving at color theory.

Digital preservation is an issue faced by practitioners in Ross Harveythe library and recordkeeping professions, yet most professionalshave little time to keep up with the latest techniquesand standards. This invaluable work provides a single-volume introduction to the principles, strategies and practices currently applied by librarians and recordkeepers to the preservation of digital information and will assist them to make informed decisions about the role of digital information in their care. The book is presented in four parts: Why do we preserve? What do we preserve? How do we preserve? and How do we manage digital preservation? Each part covers the area in detail and addresses current issues in a clear and informative manner. The terminology of the field is explained clearly throughout the book. Each chapter includes a range of case studies from institutionsat the forefront of digital object preservation. An index facilitates quick access. This book will be essential as a professional reference tool for all librarians, recordkeepers and archivists with preservation responsibilities as well as being a definitive source of information for the whole profession including students.

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