Analytical devices are instruments used to measure, analyze, and interpret various physical and chemical properties of substances. They play a crucial role in fields such as chemistry, biology, and environmental science, helping researchers and professionals obtain accurate data for experiments and quality control. Common examples include spectrophotometers, chromatographs, and mass spectrometers. These devices can provide insights into the composition, concentration, and structure of materials. By utilizing techniques like spectroscopy and electrophoresis, analytical devices enable scientists to identify unknown substances, monitor reactions, and ensure compliance with safety standards. Their precision and reliability make them essential tools in laboratories and industrial settings.