Isoelectric Focusing deals with the theory and applications of isoelectric focusing. The book reviews some alternative approaches to generation of pH gradients for isoelectric focusing analysis, along with other relevant topics such as the theoretical aspects of steady-state isoelectric focusing, gel electrofocusing/gel electrophoresis, and transient state isoelectric focusing. This volume is organized into nine chapters and begins by looking at the history of the discovery of isoelectric focusing and correcting some blurred impressions conveyed in the literature. It then turns to a discussion of the differential equation of isoelectric focusing, the carrier ampholytes used in carrying out the technique, the use of isoelectric focusing in polyacrylamide and granulated gels as well as in free solution, and continuous-flow electrophoresis and isoelectric focusing. An attempt is made to illuminate problems in isoelectric focusing and to point out possible solutions in the areas of theory, mechanisms, ampholyte chemistry, and apparatus. Some of the processes that occur during an isoelectric focusing experiment are also considered. This book is intended for anyone who needs to know what isoelectric focusing is all about.