A Rotary Evaporator (often called a Rotovap) is a laboratory device used to gently and efficiently remove solvents from liquid mixtures through evaporation under reduced pressure. It consists of a rotating flask that holds the sample, a water or oil bath that provides controlled heating, a condenser that cools and condenses the vapor, and a receiving flask that collects the distilled solvent. The rotation of the flask increases the surface area for evaporation and prevents bumping, while the vacuum system lowers the boiling point of the solvent, allowing for faster and safer evaporation at lower temperatures. Rotary evaporators are widely used in chemical, pharmaceutical, and botanical laboratories for solvent recovery, concentration of extracts, and purification of compounds without thermal degradation.