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.