Much has happened since the first edition appeared in 1982 and the second edition appeared in 1987. Ion chromatography has undergone impressive technical developments and has attracted an ever-growing number of users. The instrumentation has improved and the wealth of information available to the user has increased dramatically. Research papers and posters on new methodology and on applications in the power and semiconductor industries, pharmaceutical, clinical and biochemical applications and virtually every area continue to appear. An increasing number of papers on ion analysis by capillary electrophoresis is also included. Ion chromatography is now truly international in its scope and flavor.