This book has been written for the students of under-graduate and postgraduate level of the various universities. A special feature of the book is that the text has been illustrated with a large number of line diagrams and the data presented in the form of numerous tables for reference and comparison. In the preparation of text standard works and review by renowned author have been freely consulted and the reference given chapter wise. At the end of the book will be found useful by those who wish to make a more detailed study of the topics discussed. Contents: Colloid Science, Electrolytic Conductance and Electrolytic Transference, Phase Rule.