PRINCIPLES OF INSTRUMENTAL ANALYSIS has long been the standard for courses that deal with the principles and applications of modern analytical instruments. Now with their new Sixth Edition, authors Douglas A. Skoog, F. James Holler, and Stanley R. Crouch infuse their popular text with updated techniques as well as new Instrumental Analysis in Action case studies. The book's updated material enhances its proven approach, which places an emphasis on the theoretical basis of each type of instrument, its optimal area of application, its sensitivity, its precision, and its limitations. PRINCIPLES OF INSTRUMENTAL ANALYSIS also introduces students to elementary analog and digital electronics, computers, and treatment of analytical data. A book companion website is available, providing students with tutorials on instrumental methods, Excel files of data analysis and simulations of analytical techniques to help them visualize important concepts in this course, and selected papers from the chemical literature to stimulate interest and provide background information for study.