Analytical chemistry is the science by which the composition of materials is studied. Analytical chemists (or analysts) therefore play a key role in, for example, all manufacturing industries, the production of pharmaceuticals, forensic science and clinical laboratories, and in environmental and consumer protection. This module first introduces fundamental concepts of analytical chemistry and explains how analysts communicate their results to others. The module then discusses how the analyst detects which substances are present in a sample and determines their concentration. Some samples for analysis are so complex that it is best to separate them first into their individual components, before determining them. This module will provide an introduction to separation science and two of the most important separation techniques are discussed in outline. The final part of the course will centre on two examples of analytical technques – gravimetric and volumetric analysis.