A digital rotary evaporator is a laboratory instrument used for separating and purifying liquid samples. It works by evaporating a solvent under vacuum conditions to separate it from a sample. The sample is typically a solution or a mixture containing the desired compound or compounds that need to be extracted or purified. The rotary evaporator consists of a water bath, a rotating flask, a condenser, and a vacuum pump. The sample is placed in the rotating flask and heated in a water bath to evaporate the solvent. The solvent vapors then pass through the condenser, where they are cooled and condensed back into a liquid. The purified sample can be collected in a separate flask for further analysis. Digital rotary evaporators have digital displays that show temperature, pressure, and other parameters in real-time, allowing for precise control over the evaporation process. They also have safety features, such as automatic shut-off and alarms, to prevent accidents and ensure proper operation. Digital rotary evaporators are commonly used in chemistry and biochemistry labs for applications such as solvent removal, concentration, and extraction of compounds. They are also used in the production of pharmaceuticals, foods, and other products that require the separation and purification of liquid samples.