Book excerpt: Compendium of Analytical Nomenclature: Definitive Rules 1977 focuses on the recommended nomenclature and symbols to be used in various disciplines of analytical chemistry. The book first offers information on recommendations for the presentation of the results of chemical analysis; recommendations for terminology to be employed with precision balances; and recommendations on nomenclature for contamination phenomena in precipitation from aqueous solution. The text also takes a look at recommended nomenclature for automatic analysis and recommendations for nomenclature of thermal analysis and mass spectrometry, as well as recommended nomenclature for titrimetric analysis. The publication reviews the practical measurements of pH in amphiprotic and mixed solvents. Topics include operational pH scale; selection of a pH unit for amphiprotic solvents; and interpretation of the measured pH. The text also considers the recommendations on nomenclature and presentation of data in gas chromatography and recommendations on nomenclature for chromatography. The book is a valuable source of data for readers wanting to study analytical nomenclature.