Extraction devices are tools designed to remove specific substances from a mixture or environment. They are commonly used in various fields, including chemistry, medicine, and environmental science. For example, in laboratories, extraction devices can isolate compounds from solutions, while in medical settings, they may be used to extract fluids or tissues for analysis. In the context of environmental science, extraction devices can help collect samples from soil or water to assess pollution levels. These devices can vary in complexity, from simple syringes to advanced centrifuges and vacuum systems, depending on the specific extraction needs and the materials involved.