Physical Techniques in Biological Research, Volume II, Part A: Physical Chemical Techniques focuses on physical chemical techniques that have been most widely used in the study of molecules of biological significance. This book outlines the theoretical basis of the methods, describes the apparatus and manipulations used, and describes the applications of the techniques by examples. Organized into seven chapters, this volume begins with an overview of the basic property that makes the use of isotopes as tracers possible. This text then explains the predicted behavior during separations of chemically reacting systems by digital computer techniques. Other chapters consider the mutual diffusion in a binary system of components A and B. This book discusses as well the migration of charged particles or molecules in a liquid medium under the influence of an applied electric field. The final chapter deals with the basic units of electric potential differences. This book is a valuable resource for biological chemists.