Analytical chemistry is the science of obtaining, processing, and communicating information about the composition and structure of matter. In other words, it is the art and science of determining what matter is and how much of it exists. In 2012 (salary survey data), analytical chemistry was the most popular field of work for ACS chemists.<br>Analytical chemists use their knowledge of chemistry, instrumentation, computers, and statistics to solve problems in almost all areas of chemistry and for all kinds of industries. For example, their measurements are used to assure the safety and quality of food, pharmaceuticals, and water, to assure compliance with environmental and other regulations, to support the legal process, to help physicians diagnose diseases, and to provide measurements and documentation essential to trade and commerce. Analytical chemists often work in service-related jobs and are employed in industry, academia, and government. They conduct basic laboratory research, perform process and product development, design instruments used in analytical analysis, teach, and work in marketing and law. Analytical chemistry can be a challenging profession that makes significant contributions to many fields of science.