I. Claus Bernhardt – författare

This text should be of interest to all those concerned with the preparation, processing and analysis of disperse systems. There are a wide range of methods and devices available to provide information on the quantative distribution of the characteristics of particle size and shape to select from and the choice is by no means an easy one. By restricting coverage to classification and sedimentation methods this book intends to assist with the choice of technique as well as promote a deeper understanding of the theoretical foundations, which are scattered over many branches of science. The technical problems of measurement are illustrated as are their effect on the interpretation of results. A certain degree of experience in the field is presupposed and as such, this book should prove to be an invaluable reference text for powder technologist in a wide range of industries as well as graduates and researchers in chemical engineering, materials science and environmental engineering.

teacher Professor Ernst-Joachim Ivers to whom I still owe many insights 20 years after the end of his working life. This English edition is not an unedited translation of the German edition of 1990. The text has been substantially revised in some chapters, taking into account the literature published in the mean time. I wish to thank Dr.-Ing. H. Finken, Freiberg, who has prepared the translation from German into English with deep scientific understanding and in close contact with the author. I also wish to express my gratitude to Chapman & Hall for their support to this project without which the English edition could not have been published. Dr.-Ing. habil. C. Bernhardt Freiberg 1 Position, tasks and structure of particle size analysis Today the concept of particle size analysis is that of a special field of particle measurement technology, which in turn is part of particulate technology. This classification has developed over the last 20 years; it is the result of a scientific integration process taking place in many industrialized countries of the world. In recent years, the meaning and mutual connection of the related concepts as well as the tasks of the scientific disciplines designated by them have been the subject of intensive discussion which, however, has not led to a generally accepted terminology.