Electrochemistry deals with the nature of electrolytes and with the processes at electrodes which are in contact with electrolytes. Generally speaking chemistry is electrochemistry as interactions in the atomic scale are of electrical nature. Electrochemistry is the basis of many important and modern applications and scientific developments such as nanoscale machining (fabrication of miniature devices with three dimensional control in the nanometer scale), electrochemistry at the atomic scale, scanning tunneling microscopy, transformation of energy in biological cells, selective electrodes for the determination of ions, and new kinds of electrochemical cells, batteries and fuel cells. All these developments need precise values of the electrochemical systems. Springer Verlag and the editor are very grateful to the author R. Holze who collects and presents all relevant data together with a precise description of the phenomenons in this volume